Esophago-gastro-duodenoscopy could be an important tool in the diagnostic dilemma inherent in perforated peptic ulcer: A case report oleh Pankaj Prasoon, Giridhar Hanumappa Devadasar, Tun Aung Kyaw, Mohd. Akthar Ansari, Mulky Damodar Kamath, Chean Leung Chong