RT Journal Article SR Electronic T1 Correspondence on “PICaSSO Histologic Remission Index (PHRI) in ulcerative colitis: development of a novel simplified histological score for monitoring mucosal healing and predicting clinical outcomes and its applicability in an artificial intelligence system” by Gui et al JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 805 OP 807 DO 10.1136/gutjnl-2022-327661 VO 72 IS 4 A1 Emily C L Wong A1 Parambir S Dulai A1 Neeraj Narula YR 2023 UL http://gut.bmj.com/content/72/4/805.abstract AB