1. Changes in aetiology and clinical outcome of acute upper gastrointestinal bleeding during the last 15 years;Thomopoulos;Eur J Gastroenterol Hepatol,2004
2. The utility of endoscopic biopsies in patients with normal upper endoscopy;Teriaky;Can J Gastroenterol Hepatol,2016
3. [3] Swarnkar M, Jain SC. Heterotopic subserosal pancreatic tissue in jejunum-an incidental rare finding. JKIMSU 2017;6(4):105-8.
4. [4] Kahrilas PJ, Hirano I. Diseases of the esophagus. In: Kasper D, Fauci A, Hauser S, et al, eds. Harrison's principles of internal medicine. 19th edn. McGraw-Hill Medical 2015.
5. Biopsies in gastrointestinal endoscopy: when and how;Peixoto;GE Port J Gastroenterol,2015