Kazmi, Syed Kumail Hasan, et al. “A Year of Endoscopic Retrograde Cholangiopancreatography (ERCP) At a Glance. Indications, Interventions, Complications”. Pakistan Armed Forces Medical Journal, vol. 72, no. 2, May 2022, pp. 555-59, https://doi.org/10.51253/pafmj.v72i2.5675.