Yasin Sahin, MD, Associate Professor, Department of Pediatric Gastroenterology, Medical Park Gaziantep Hospital, 27090, Turkey Dr. Yasin Sahin was graduated from Istanbul University Cerrahpasa Medical Faculty English Department in 1999 with qualification ‘’Medical Doctor’’. He has completed his pediatrics training between 1999 and 2004. Following residency in pediatrics, he worked as pediatrician for a few years until he started to fellowship in Pediatric Gastroenterology. He finished his fellowship in Pediatric Gastroenterology in 2016 at the Cerrahpasa Medical Faculty, Istanbul, Turkey. The main expertise of Dr. Yasin Sahin is celiac disease, liver disease and endoscopy in children. He is mainly dedicated to celiac disease in children. He is founder of the Pediatric Gastroenterology Department in Mersin City Training and Research Hospital, and Medical Park Gaziantep Hospital. He is working at the Pediatric Gastroenterology Department of Medical Park Gaziantep Hospital, Turkey. Memberships: ESPGHAN Working Group on Coeliac Disease Diagnosis, Turkish Pediatric Association, Turkish Society of Gastroenterology, and Turkish Society of Pediatric Gastroenterology Hepatology and Nutrition.