1. Department of Medicine University of Malaya Kuala Lumpur Malaysia
2. School of Medical Sciences Universiti Sains Malaysia Kota Bharu Malaysia
3. Department of Gastroenterology Pantai Hospital Kuala Lumpur Malaysia
4. School of Medical and Life Sciences Sunway University Petaling Jaya Malaysia
5. Department of Medicine Hospital Serdang Serdang Malaysia
6. Department of Medicine Queen Elizabeth Hospital Kota Kinabalu Malaysia
7. Medical Department KPJ Pahang Specialist Hospital Kuantan Malaysia