Haider, I., Hussain, D. and Muhammmad, A. (2011) “SPECTRUM OF HELICOBACTER PYLORI IN HUNDRED PATIENTS PRESENTING WITH PERFORATED DUODENAL ULCER”, Journal of Postgraduate Medical Institute, 25(4). Available at: https://jpmi.org.pk/index.php/jpmi/article/view/1144 (Accessed: 22 July 2024).