Halaman 3 - USG Dokter Terbaik - TOP-503 dokter

Dissatat Budhithada, M.D.

OBSTETRICIAN AND GYNECOLOGIST

Graduation (M.D. From)

Bachelor of Medicine, Faculty of Medicine, Chulalongkorn University

A branch of medicine that specializes in the care of women during pregnancy and childbirth and in the diagnosis and treatment of diseases of the female reproductive organs. It also specializes in other women’s health issues, such as menopause, hormone problems, contraception (birth control), and infertility. Also called ob/gyn

Certificates

Diploma in Obstetrics and Gynecology, Faculty of Medicine, Ramathibodi Hospital

Current Positions

Obstetrician and gynecologist at Intrarat Hospital

Dokter adalah seorang ahli jantung terkemuka dan Ketua Kardiologi Intervensi di Medanta - The Medicity, Gurgaon, India. Dia diakui sebagai pelopor penggunaan perangkat baru seperti Rotarex dan Kensey Nash DPD di India.<\/p>

Dia melakukan lebih dari 2500 prosedur diagnostik dan 2000 intervensi perkutan setiap tahun, termasuk valvuloplasti. Dia adalah Anggota dari Masyarakat Intervensi Endovaskular India dan Masyarakat Kardiologi Intervensi Asia-Pasifik.<\/p>

Dia telah menulis lebih dari 100 artikel di jurnal medis terkemuka dan dianugerahi Penghargaan Padma Shri pada tahun 2016 atas karya teladannya dalam bidang kedokteran.<\/p>

Pendidikan dan Spesialisasi:

• Gelar Kedokteran: Fakultas Kedokteran Universitas Istanbul Cerrahpaşa (1991-1998)
• Spesialisasi dalam Bedah Saraf: Fakultas Kedokteran Universitas Teknik Karadeniz (1999-2005)
• Jabatan Asosiasi Profesor: (2015)
• Jabatan Profesor: (2020)

Pengalaman Profesional:

• 2007-2008: GATA Ankara
• 2009-2011: Rumah Sakit Özel Ordu Medical Park
• 2011-2013: Rumah Sakit Pelatihan dan Penelitian Ankara Keçiören
• 2013-2015: Fakultas Kedokteran Universitas Giresun
• 2014: Pengamat Klinis di Rumah Sakit Sentral Universitas Helsinki
• 2015-2023: Fakultas Kedokteran Universitas Teknik Karadeniz
• Posisi Saat Ini: Ahli Bedah Saraf di VM Medical Park Pendik Hospital

Bidang Keahlian:

• Aneurisma Otak dan Perbaikan
• Bedah Tumor/Kanker Otak
• Bedah Stenosis Saluran Tulang Belakang
• Herniasi Diskus Lumbal dan Servikal
• Bedah Saraf Tulang Belakang
• Bedah Saraf Minimal Invasif
• Bedah Saraf Pediatrik
• Anomali Kongenital

Riset dan Publikasi: Prof. Dr. Arslan memiliki banyak publikasi di jurnal terkemuka yang mencakup topik seperti pengobatan tumor otak dan tulang belakang, teknik bedah saraf inovatif, dan hasil intervensi bedah saraf. Karyanya termasuk studi tentang cedera iskemia/reperfusi otak, iskemia tulang belakang, dan berbagai kondisi bedah saraf lainnya.

Keanggotaan Profesional:

• Asosiasi Bedah Saraf Turki
• Perkumpulan Bedah Saraf Neurologis Turki

Prof. Amos Toren, MD, PhD, MHA, is a pediatric hemato-oncologist and BMT specialist. He served as Director of Pediatric Hemato-Oncology and BMT at Sheba Medical Center.

He is board certified in Pediatrics, Pediatric Hemato-Oncology, and Bone Marrow Transplantation. He holds a PhD in Human Genetics. He was Head of the Hematology Division at Tel Aviv University for two terms. He is a member of ASH, COG, ESPHI, EBMT, and CIBMTR. He also serves on the Ministry of Health Cord Blood Committee.

He led one of Israel’s most advanced pediatric oncology and BMT programs. The program treated children and young adults. His focus includes leukemia and lymphoma, immunodeficiencies, and rare cancers. He specializes in BMT and CAR T-cell therapy.

His translational research covers CAR T cells, cytokine-induced killer cells, pediatric brain tumors, and targeted therapies. He has worked with St. Anna, the NIH, and St. Jude. His publications include studies on pediatric SCT prophylaxis and PARP resistance.

Education and Specialization:

• Medical Degree: Dokuz Eylül University Faculty of Medicine (1996)
• Specialization in Neurosurgery: Bakırköy Mazhar Osman Training and Research Hospital for Psychiatry, Neurology, and Neurosurgery (1997-2003)

Professional Experience:

• 2003-Present: Neurosurgery Specialist with extensive experience, including roles at the Bakırköy Dr. Sadi Konuk Training and Research Hospital and currently at VM Medical Park Florya Hospital, Istanbul.

Areas of Expertise:

• Spinal Surgery: Expertise in treating conditions like spinal stenosis, herniated discs, and complex spine deformities.
• Brain Tumor Surgery: Specializes in the surgical removal of brain tumors, including minimally invasive and endoscopic techniques.
• Pediatric Neurosurgery: Proficient in treating spinal and brain conditions in children, such as spina bifida and pediatric brain tumors.
• Gamma Knife Surgery: Uses advanced radiosurgical techniques for treating brain tumors and other neurological disorders.
• Scoliosis Treatment: Offers comprehensive treatment options for scoliosis, including surgical correction.
• Cerebrovascular Surgery: Skilled in surgeries for cerebrovascular diseases, including aneurysm repairs and AVM treatments.

Research and Publications: Dr. Güçlü has published numerous articles in prestigious journals, focusing on spinal surgery techniques, brain tumor management, and pediatric neurosurgery. His work has been recognized for its impact on improving surgical outcomes and patient care in neurosurgery.

Dokter adalah spesialis dalam bedah robotik dan ahli bersertifikat oleh Intuitive Surgical, produsen robot Da Vinci. Dokter adalah anggota Asosiasi Kedokteran Estetika dan Asosiasi Bedah Bariatrik.<\/p>

Memimpin Pusat Bedah Robotik di Rumah Sakit St. Zdislava di Republik Ceko, dokter telah melakukan lebih dari 3.500 operasi robotik. Ini termasuk prostatektomi dengan pelestarian fungsi ereksi, operasi transoral, tiroidektomi, nefrektomi, dan operasi bariatrik.<\/p>

YEOUN E PARK, Kepala Petugas Medis Departemen Ginekologi

• Pendidikan/Karier Akademis
• Spesialis, Obstetri dan Ginekologi
• Kepala Petugas Medis, Seoul Miz Hospital
• Direktur Utama, Gangdong Miz Hospital
• Direktur Utama, Obstetri dan Ginekologi YEOUN E PARK
• Lulus dari Chungnam National University College of Medicine
• Dosen Adjung, Hallym University College of Medicine
• Dosen Adjung, Korea University College of Medicine
• Dosen Adjung, Konkuk University College of Medicine
• Dosen Adjung, Gangdong Kyunghee University College of Medicine
• Keanggotaan Profesional
• Anggota, Korean Society of Obstetrics and Gynecology
• Anggota, The Korean Society of Perinatology
• Anggota, Korean Society of Maternal Fetal Medicine

Spesialisasi

Klinik Inkontinensia, Bedah Laparoskopi (untuk mioma uteri, tumor ovarium), Manajemen Kehamilan Berisiko Tinggi, Endometriosis, Klinik Bedah Kosmetik Wanita, Skrining Kanker Ginekologi, Manajemen Menopause, Layanan Pasien Internasional.

Dr Omar Abouali is a fertility specialist and minimally invasive surgeon. He completed specialty training in obstetrics and gynaecology at Alexandria University Hospital. He graduated in the top 5% with honours from Alexandria University. He holds a master’s in assisted reproduction from the University of Oxford. He also holds a master’s in reproductive endocrinology from Alexandria University and a diploma in genetic diseases from Harvard University.

He worked as a fertility specialist at Madina Fertility Centre and helped many couples start a family. Dr Omar is pioneering No-Needle IVF, a method in which women undergoing IVF do not need to have the dozens of injections traditionally required.

Dr. Gokhan Yilmaz is an experienced general surgeon with nearly 20 years in medical practice. He is known for his skill in complex surgical procedures. He earned his Master’s Degree from Istanbul University Çapa Faculty of Medicine. He completed his Doctorate in General Surgery at Okmeydanı Training and Research Hospital, one of Turkey’s leading institutions.

Dr. Yilmaz worked as a General Surgery Specialist at Zonguldak Atatürk State Hospital for 5 years. He then served at Sancaktepe Şehit Prof. Dr. İlhan Varank Training and Research Hospital for 3 years. In these roles, he managed a wide range of surgical cases. He also served as an Assistant Professor at Istanbul Medipol University, where he trained future surgeons and contributed to research.

Dr. Yilmaz is currently part of the General Surgery Department at Medipol University Pendik Hospital. He provides advanced treatments and high-quality patient care. His experience in state hospitals, research centers, and universities highlights his dedication to surgical excellence and patient safety.

Pichai Kittipanyaworakul, M.D., is an internist. He specializes in gastroenterology and hepatology.

Education: Doctor of Medicine (M.D.), Faculty of Medicine, Chiang Mai University.

Accreditations: Diploma in Internal Medicine, Chulalongkorn Memorial Hospital, Thai Red Cross Society. Diploma in Internal Medicine (Gastroenterology and Hepatology), Faculty of Medicine Ramathibodi Hospital, Mahidol University.

Education and Specialization

• 2006 – Ankara University, Faculty of Medicine
• 2007, 2011 – Baskent University, Faculty of Medicine, Residency Training

Experience

• 2011, 2013 – Konya Çumra State Hospital – Radiology Specialist
• 2013, 2018 – Baskent University Konya Application and Research Center, Interventional Radiology Unit – Lecturer
• 2018,2019 – Baskent University Konya Application and Research Center, Interventional Radiology Department – Associate Professor
• 2019  Present – Medical Park Antalya Hospital Complex, Interventional Radiology Department – Associate Professor

Neurosurgery Training: Gazi University, Department of Neurosurgery, 2011 

H index: 10, I10 Index: 12 Citations: 296

 Dr Mehmet Tonge has international and nationwide 32 publications, 12 book chapters, 92 oral and poster presentations and 41 invited lectures, mostly on Stereotactic and Functional Neurosurgery. 

Work & Training experience:

2004-2011: Gazi University, Department of Neurosurgery (Residency)

 2008: Zurich University Hospital, Department of Neurosurgery (Intraoperative MRI applications), Switzerland 

2008: Zurich University Hospital, Department of Neurosurgery: Microneurosurgery, white matter dissection, interventional neuroradiology courses, Switzerland 

2011 – 2012: Sinop Ataturk State Hospital, Neurosurgeon

 2012 – 2013: Cankiri State Hospital, Neurosurgeon 

2013 – 2014: Istanbul Medipol University, Department of Neurosurgery & Gamma Knife Center (Ass Prof) 

2013 – now: Maastricht University Neurosurgery & Neuroscience Department (Visiting scientist, PhDc) The Netherlands 

2014: Maastricht University, The Netherlands: Deep Brain Stimulation Fellowship 2014-2018: Istanbul Memorial Hospital Neurosurgery: Staff Neurosurgeon

 2016-2018: Istanbul Florence Nightingale Hospital (Consultant, Gamma Knife Center) 

2018-now: Istanbul Medipol University (Stereotactic & Functional Neurosurgery, Gamma Knife Center) Ass. Prof.) 

Dr Mehmet Tonge has completed 4-year cycle EANS (European Association of Neurosurgical Societies) Training courses. 

Clinical areas of interest:

 • Stereotactic & Functional Neurosurgery

 • Surgery for movement disorders

• * MR Guided Focused Ultrasound (MRgFUS)

 • Gamma Knife Radiosurgery 

• Surgery for pain & spasticity 

• Psychosurgery

Research areas of interest: 

• Deep brain stimulation

• * MR Guided Focused Ultrasound (MRgFUS)

 • Stereotactic radiosurgery 

Administrative duties:

 • Turkish Neurosurgical Society, Sterotactic & Functional Neurosurgery Section: Board member 2015- 2017 

• Turkish Neurosurgical Society, Sterotactic & Functional Neurosurgery Section: Board member (Secretary) 2017-2019

 • Turkish Skull Base Society: Board member 2016-2018

 • Turkish Skull Base Society: Supervisory board member 2018-2020

 • Deep Brain Stimulation and Movement Disorders Surgery Society: Executive Board Member, (Accountant) 2023-still 

Memberships: 

• WSSFN (World Stereotactic & Functional Neurosurgery Society) 

• ESSFN (European Stereotactic & Functional Neurosurgery Society)

 • Deep Brain Stimulation and Movement Disorders Surgery Society

 • Deep Brain Stimulation Society 

• International Stereotactic Radiosurgery Society 

• Leksell Gamma Knife Society 

• EANS (European Association of Neurosurgical Societies) 

• Turkish Neurosurgical Society

• Turkish Skull Base Society

Sample Publications: 

1. Tonge M. Technological developments in electric based DBS. Deep Brain Stimulation 2024 4(36-41) DOI: https://doi.org/10.1016/j.jdbs.2023.12.001 

2. Akgul E, Onan HB, Islek I, Tonge M, Durmus Y, Barburoglu M, Azizova A, Erol C, Hakyemez B, Sencer S, Aydin K, Arat A. Flow diverter stents in the treatment of recanalized intracranial aneurysms. Interv Neuroradiol. 2021 Aug;27(4):481-489. doi: 10.1177/1591019921990507. Epub 2021 Jan 28. PMID: 33509011; PMCID: PMC8580529. 

3. Mulders AEP, Temel Y, Tonge M, Schaper FLWVJ, van Kranen-Mastenbroek V,Ackermans L, Kubben P, Janssen MLF, Duits A. The association between surgical characteristics and cognitive decline following deep brain stimulation of the subthalamic nucleus in Parkinson's disease. Clin Neurol Neurosurg. 2021 Jan;200:106341. doi: 10.1016/j.clineuro.2020.106341. Epub 2020 Nov 3. PMID: 33160716. 

4. Wetzelaer P, Vlis T, Tonge M, Ackermans L, Kubben P, Evers S, Kocabicak E, Temel Y. Management of Hardware Related Infections after DBS Surgery: A Cost Analysis. Turk Neurosurg. 2018;28(6):929- 933. doi: 10.5137/1019-5149.JTN.21511-17.1. PMID: 29465741. 

5. Bedirli N, Emmez G, Ünal Y, Tönge M, Emmez H. Effects of positive end- expiratory pressure on intracranial pressure during pneumoperitoneum and Trendelenburg position in a porcine mode. Turk J Med Sci. 2017 Nov 13;47(5):1610-1615. doi: 10.3906/sag-1609-17. PMID: 29152942. 

6. Sari R, Tonge M, Bolukbasi FH, Onoz M, Baskan O, Silav G, Elmaci I. Management of Failed Cranioplasty. Turk Neurosurg. 2017;27(2):201-207. doi: 10.5137/1019-5149.JTN.15395-15.0. PMID: 27593759. 

7. Tonge M, Kocabicak E, Ackermans L, Kuijf M, Temel Y. Final Electrode Position in Subthalamic Nucleus Deep Brain Stimulation Surgery: A Comparison of Indirect and Direct Targeting Methods. Turk Neurosurg. 2016;26(6):900-903. doi: 10.5137/1019-5149.JTN.13739-14.1. PMID: 27337232. 

8. Tonge M, Ackermans L, Kocabicak E, van Kranen-Mastenbroek V, Kuijf M, Oosterloo M, Kubben P, Temel Y. A detailed analysis of intracerebral hemorrhages in DBS surgeries. Clin Neurol Neurosurg. 2015 Dec;139:183-7. doi: 10.1016/j.clineuro.2015.10.017. Epub 2015 Oct 23. PMID: 26513430. 

9. Silav G, Bölükbaşı FH, Özek E, Tönge M, Önöz M, Elmacı İ. A Simple Technique for Bone Storage after Decompressive Craniectomy in Children. Pediatr Neurosurg. 2015;50(3):161-4. doi: 10.1159/000381748. Epub 2015 May 14. PMID: 25998533. 

10. Yilmaz MB, Donmez H, Tonge M, Senol S, Tekiner A. Vertebrojugular arteriovenous fistula and pseudoaneurysm formation due to penetrating vertebral artery injury: case report and review of the literature. Turk Neurosurg. 2015;25(1):141-5. doi: 10.5137/1019-5149.JTN.8247-13.1. PMID: 25640560. 

11. Kurt G, Tönge M, Çeltıkçı E, Çapraz I, Serdaroğlu A, Bılır E. Surgery for intractable temporal lobe epilepsy: experience of a single institution. Turk J Med Sci. 2014;44(5):866-70. doi: 10.3906/sag-1307- 30. PMID: 25539559. 

12. Yılmaz MB, Tönge M, Emmez H, Kaymaz F, Kaymaz M. Neuroprotective effects of quetiapine on neuronal apoptosis following experimental transient focal cerebral ischemia in rats. J Korean Neurosurg Soc. 2013 Jul;54(1):1-7. doi: 10.3340/jkns.2013.54.1.1. Epub 2013 Jul 31. PMID: 24044072; PMCID: PMC3772279. 

13. Yilmaz MB, Egemen E, Tonge M, Kaymaz M. Transoral protrusion of a peritoneal catheter due to gastric perforation 10 years after a ventriculoperitoneal shunting: case report and review of the literature. Turk Neurosurg. 2013;23(2):285-8. doi: 10.5137/1019-5149.JTN.4904-11.1. PMID: 23546921. 

14. Omerhodzic I, Tonge M, Matos B, Musabeliu E, Raspanti C, Ferdinandov D, Galimova R, Muroi C, Balik V, Kursumovic A. Neurosurgical training programme in selected European countries: from the young neurosurgeons' point of view. Turk Neurosurg. 2012;22(3):286-93. doi: 10.5137/1019- 5149.JTN.5133-11.0. PMID: 22664994. 

15. Ergun E, Kurt G, Tonge M, Aytar H, Tas M, Baykaner K, Ceviker N. Effects of phenytoin sodium on dura mater healing in a rat model of CSF leakage. Turk Neurosurg. 2011;21(4):471-6. PMID: 22194102. 

16. Emmez H, Tonge M, Tokgoz N, Durdag E, Gonul I, Cevıker N. Radiological and histopathological comparison of microporous polysaccharide hemospheres and oxidized regenerated cellulose in the rabbit brain: a study of efficacy and safety. Turk Neurosurg. 2010 Oct;20(4):485-91. doi: 10.5137/1019- 5149.JTN.3300-10.2. PMID: 20963698. 

17. Emmez H, Yildirim Z, Kale A, Tönge M, Durdağ E, Börcek AO, Uçankuş LN, Doğulu F, Kiliç N, Baykaner MK. Anti-apoptotic and neuroprotective effects of α-lipoic acid on spinal cord ischemiareperfusion injury in rabbits. Acta Neurochir (Wien). 2010 Sep;152(9):1591-600; discussion 1600-1. doi: 10.1007/s00701-010-0703-9. Epub 2010 Jun 10. PMID: 20535507. 

18. Kurt G, Tonge M, Börcek AO, Karahacioglu E, Gurel O, Baykaner K, Ceviker N, Aykol S. Fractionated gamma knife radiosurgery for optic nerve tumors: a technical report. Turk Neurosurg. 2010 Apr;20(2):241-6. doi: 10.5137/1019-5149.JTN.1681-09.3. PMID: 20401852. 

19. Emmez H, Kale A, Tönge M, Cakir A, Ceviker N. Two meningiomas with different histological grades in the same patient. Case report. Neurol Med Chir (Tokyo). 2010;50(8):686-8. doi: 10.2176/nmc.50.686. PMID: 20805656.

Full time doctor at PrimeCare Bangkok who is also currently pursing a masters degree and research in anti-aging 

Education

Doctor of Medicine (M.D.) degree from Faculty of Medicine, Ramathibodi Hospital, Mahidol University,2023

Certifications

Currently pursuing a Master’s degree in Anti-Aging and Regenerative Medicine, Dhurakij Pundit University Bangkok (DPU)

Languages spoken: English and Thai

Dr. Pornpitak founded Phayathai Sriracha Hospital. He is the Chairman and Medical Director of VAANAA Longevity Bangsaen. He specializes in regenerative and preventive medicine.

He is known for his work in cellular therapies, especially mesenchymal stem cells (MSCs). These therapies aim to reduce systemic inflammation, modulate immune responses, and support tissue repair. He oversees MSC protocols from lab cultivation to personalized administration. His programs follow strict, science-based methods and align with global safety and efficacy standards.

Bidang Keahlian:  Pengobatan infertilitas  Fertilisasi in-vitro (IVF)  Vaksinasi  Persalinan alami  Seksio sesarea  Operasi ginekologi Pengalaman:  1997–2003: Lulus dari Universitas Kedokteran Negeri Azerbaijan.  2003–2005: Residen di Departemen Obstetri dan Ginekologi, Universitas Negeri Donetsk.  2005–2008: Magang di Rumah Sakit Cochin di Paris, Prancis.  2008 hingga sekarang: Bergabung dengan Bahçeci Health Group sebagai ginekolog, bekerja di cabang internasional selama beberapa tahun.  2012–2015: Menyelesaikan program Magister di Departemen Obstetri dan Ginekologi, Universitas Hacettepe, Turki.  2021: Bekerja di klinik Korea-East.  2021–2024: Berpraktik di klinik Fetal Center NS Genetics.

Dr. Sang Won Hwang is a neurosurgeon focused on spine surgery. He has nearly 30 years of experience and has performed over 6,000 spine procedures. He is skilled in minimally invasive and endoscopic techniques. He also performs cervical artificial disc replacement. His approach aims for faster recovery, less pain, and better outcomes.

He manages complex cases, including spinal tumors and revision surgeries. He uses careful diagnosis and personalized treatment plans.

CEO, Chief Spine Surgeon, and Spine Center Director at Lead Hill Hospital. MD, Inha University College of Medicine. Awards: 2021 Eunpyeong Grand Prize (Beautiful Donation Award) and 2019 Medical Service Award. Member: Honor Society (Community Chest of Korea), Korean Spinal Neurosurgery Society, Korean Neurosurgical Hospital Association, and Korean Regional Hospital Association.

Dr. Hana Golan, MD, heads the Pediatric Hemato-Oncology and Bone Marrow Transplantation (BMT) Division at Sheba Medical Center. She specializes in childhood cancers, with a focus on neuroblastoma and other high-risk solid tumors.

She leads one of the region’s most advanced pediatric oncology programs. She manages complex, high-risk cases and practices at a hospital ranked in the global top 10.

She is the principal investigator of the High-Risk Neuroblastoma ESIOP protocol. She serves as an investigator in international Phase I/II trials and as the national coordinator of multicenter oncology protocols. She led the development of computerized chemotherapy protocols and patient databases to improve safety.

She earned her MD from the Technion. She completed residencies in pediatrics and pediatric hemato-oncology at Sheba. She conducted advanced research in transplantation immunology at the Weizmann Institute. She is board-certified in Pediatrics and Pediatric Hematology-Oncology. She is a Senior Lecturer at the Sackler Faculty of Medicine, Tel Aviv University. Her research focuses on cancer stem cells, targeted therapies, treatment-resistant malignancies, and cannabinoid-related oncology.

Brain and Nerve Surgery Specialist

Foreign language: English

Date and Place of Birth: 11.11.1968 ANTALYA

- AREAS OF INTEREST

o Aneurysm surgery

o Cerebrospinal tumor surgery

o Lumbar hernia

o Neck hernia

o Spine surgery

o Cerebellum prolapse surgeries

o Hydrocephalus

o Pediatric neurosurgery

- Educational Background:

Undergraduate: Istanbul University Istanbul Faculty of Medicine 1985-1991

Specialization SSK Göztepe Training Hospital 1994-1999

- Academic Titles: 

Doctor of Medicine Istanbul University Istanbul Faculty of Medicine (1991)

Neurosurgery Residency : SSK Göztepe Training Hospital (1999)

- Places of Duty:

Erzurum Horasan Hasanbey health center 1991-1992

Karaman health center number 1 1992-1993

SSK Göztepe Training Hospital Assistant 1994-1999

Şanlıurfa State Hospital 1999-2002

(Neurosurgeon and Deputy Chief Physician)

Burdur State Hospital 2002-2003

Serik State Hospital 2003-2012

(Neurosurgery Specialist, Chief Physician)

Antalya Training and Research Hospital 2012- 2021

Private Anadolu Antalya Hospital 2021 - 2023

Private Medicalpark Antalya Hospital 2023 - Currently

- Medical Specialty Thesis: Genetic Absence model in Wag/rij rats 

Effects of Nervus Vagus Stimulation 1999

Note: Istanbul Chamber of Medicine 1999 Dr. Cengiz Çetin thesis prize winner