AMAN, Zahid; NAEEM, Muhammad; KHAN, Raza Muhammad; AHMAD, Tariq; ALAM, Muhammad; NOREEN, Sarwat; KHAN, Muhammad Kamran. PATTERN OF CHANGE IN THE FREQUENCY OF HELICOBACTER PYLORI WITH PERFORATED DUODENAL ULCER. Journal of Ayub Medical College Abbottabad, [S. l.], v. 20, n. 4, p. 41–43, 2008. Disponível em: https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/3840. Acesso em: 13 mar. 2025.