Surinder Singh Rana1, Deepak Gunjan1, Puneet Chhabra1, Ravi Sharma1, Rashi Garg2, Anmol Bhatia1, Lovneet Dhalaria1, Vishal Sharma1, Deepak Kumar Bhasin1
1Departments of Gastroenterology, 2Department of Cytology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.