M. F. Zakir, S. Karim, H. A. Kalwar, R. kumar Wadhwa, M. Furqan, and M. H. Baloch, “The Burden of Gastrointestinal, Hepatobiliary and Pancreas Related Diseases and Their Causes at Tertiary Care Hospital in Karachi”, PAFMJ, vol. 72, no. 3, pp. 1108–13, Jun. 2022.