Sharma Vishal, Rana Surinder Singh, Chhabra Puneet, Sharma Ravi, Gupta Nalini, Bhasin Deepak Kumar
Department of Gastroenterology, Postgraduate Institute of Medical Education and Research, Sector 12, Chandigarh, India.
Endosc Ultrasound. 2016 Jan-Feb;5(1):61-2. doi: 10.4103/2303-9027.175924.