1. Division of Gastroentero-Hepatology, Department of Internal Medicine, Faculty of Medicine-Dr. Soetomo Teaching Hospital, Universitas Airlangga, Surabaya, Indonesia
2. Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia
3. Department of Pharmacology and Clinical Pharmacy, School of Pharmacy, Institut Teknologi Bandung, Bandung, Indonesia
4. Department of Community Nutrition, Faculty of Human Ecology, IPB University, Bogor, Indonesia
5. Department of Internal Medicine, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada-Dr. Sardjito Hospital, Yogyakarta, Indonesia
6. Faculty of Medicine, Muhammadiyah University of Surabaya, Surabaya, Indonesia