Malik, M. F., T. Hussain, M. Khan, S. Mirza, and M. F. Farooq. “HELICOBACTER PYLORI INFECTION IN PATIENTS WITH DYSPEPTIC SYMPTOMS HAVING NORMAL ENDOSCOPY”. Pakistan Armed Forces Medical Journal, Vol. 60, no. 1, Mar. 2010, pp. 30-2, https://pafmj.org/index.php/PAFMJ/article/view/158.