1 Department of Pathology, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research, New Delhi, Delhi, India.
2 Department of Pathology, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research, New Delhi, Delhi, India dr.surbhi4you@gmail.com.
3 Department of Gastroenterology, Govind Ballabh Pant Institute of Postgraduate Medical Education and Research, New Delhi, Delhi, India.