RT Journal Article SR Electronic T1 Combination of CLIF-OF and CCI predicts survival in patients with cirrhosis and COVID-19 JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1798 OP 1799 DO 10.1136/gutjnl-2020-322929 VO 70 IS 9 A1 Massimo Iavarone A1 Roberta D'Ambrosio A1 Pietro Lampertico YR 2021 UL http://gut.bmj.com/content/70/9/1798.abstract AB