Rattan, P., Cristelli, R., & Patel, A. V. (2021). Massive Lower Gastrointestinal Bleeding Due to Cytomegalovirus-Related Ileal Ulcer. Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association, 19(1), A20. https://doi.org/10.1016/j.cgh.2020.01.015