Kidwai R, Ansari MA. Graham Patch Versus Modified Graham Patch in the Management of Perforated Duodenal Ulcer. J. Nepalgunj Med. College [Internet]. 2017 Jan. 17 [cited 2024 Nov. 24];13(1):28-31. Available from: https://nepjol.info/index.php/JNGMC/article/view/16409