Yokose T, Obara H, Shinoda M, Nakano Y, Kitago M, Yagi H, Abe Y, Yamada Y, Matsubara K, Oshima G, Hori S, Ibuki S, Higashi H, Masuda Y, Hayashi M, Mori T, Kawaida M, Fujimura T, Hoshino K, Kameyama K, Kuroda T, Kitagawa Y. Colon perforation due to antigenemia-negative cytomegalovirus gastroenteritis after liver transplantation: A case report and review of literature. World J Gastroenterol 2019; 25(15): 1899-1906 [PMID: 31057303 DOI: 10.3748/wjg.v25.i15.1899]