Effects of COVID-19 vaccines on patient-reported outcomes in patients with inflammatory bowel disease: a multicenter survey study in Korea oleh Jung Hyun Ji, Seung Hwan Shin, Yong Eun Park, Jihye Park, Jae Jun Park, Jae Hee Cheon, Tae Il Kim, Sang-Bum Kang, Sang Hyoung Park, Soo Jung Park, IBD Research Group of the Korean Association for the Study of Intestinal Diseases (KASID)