S894 Burden of Herpes Zoster Among Patients With Ulcerative Colitis and Crohn's Disease in the United States: A Retrospective Cohort Study Using a Large Administrative Claims Database. (October 2021) - Singer, David; Thompson-Leduc, Philippe; Poston, Sara; Gupta, Deepshekhar; Cheng, Wendy Y.; Ma, Siyu; Pawlowski, John E.; Duh, Mei Sheng; Devine, Francesca; Banatwala, Azeem; Bernstein, Emma; Farraye, Francis A.