1. Doctoral Program in Medicine Sciences Faculty of Medicine Universitas Indonesia, Division of Gastroenterology, Pancreatobilliary and Digestive Endoscopy, Cipto Mangunkusumo General Central Hospital Universitas Indonesia Jakarta Indonesia
2. Faculty of Medicine Universitas Indonesia Dr Cipto Mangunkusumo General Central National Hospital Jakarta Indonesia
3. Department of Medical Education, Faculty of Medicine Universitas Indonesia Dr Cipto Mangunkusumo General Central National Hospital Jakarta Indonesia
4. Department of Dermatology and Venereology, Faculty of Medicine Universitas Indonesia Dr Cipto Mangunkusumo General Central National Hospital Jakarta Indonesia