BHOPAL: Noted gastroenterologists participated in a two day workshop on endoscopy at National Hospital on Sunday. Those who attended include Dr Devendra Singh, Apollo, Bilaspur, Dr CC Chaubal, Dr Sandesh Sharma, Dr Arvind Namdev of Bhopal. Doctors of Gwalior, Hoshangabad, Sagar, Khargone, Piparia, Khurai, Agar, Chhindwara and other places also attend the workshop.