1. Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
2. Department of Pharmacology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
3. Government Medical College and hospital- Sector 32, Ex-intern, Chandigarh, India
4. Department of Pediatrics, Postgraduate Institute of Medical Education and Research, Chandigarh, India