Hafeez, Muhammad, et al. “POST ESOPHAGEAL VARICEAL BAND LIGATION PAIN, ANOTHER INSULT TO INJURY: Post Esophageal Variceal Band Ligation Pain”. Pakistan Armed Forces Medical Journal, vol. 67, no. 3, June 2017, pp. 414-18, https://pafmj.org/PAFMJ/article/view/545.