1. Maharajgunj Medical Campus, Institute of Medicine Tribhuvan University Kathmandu Nepal
2. Nepalese Army Institute of Health Sciences College of Medicine Kathmandu Nepal
3. Department of Internal Medicine Tribhuvan University Teaching Hospital Kathmandu Nepal
4. Department of Internal Medicine Nobel Medical College Biratnagar Nepal
5. Department of Gastroenterology Tribhuvan University Teaching Hospital Kathmandu Nepal