Baqai, R., H. Qureshi, G., Arian, and I. Mehdi. “DIAGNOSTIC EFFICACY OF STOOL ANTIGEN TEST (HPSA), CLO TEST AND SEROLOGY FOR THE DETECTION OF HELICOBACTER PYLORI INFECTION”. Journal of Ayub Medical College Abbottabad 15, no. 4 (December 1, 2003). Accessed April 19, 2025. https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/3993.