1. Assistant Professor, Department of Gastroenterology and General Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
2. Senior Resident, Department of Gastroenterology and General Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India
3. Professor, Department of Gastroenterology and General Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, India