RT Journal Article SR Electronic T1 Faecal calprotectin indicates intestinal inflammation in COVID-19 JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1543 OP 1544 DO 10.1136/gutjnl-2020-321388 VO 69 IS 8 A1 Maria Effenberger A1 Felix Grabherr A1 Lisa Mayr A1 Julian Schwaerzler A1 Manfred Nairz A1 Markus Seifert A1 Richard Hilbe A1 Stefanie Seiwald A1 Sabine Scholl-Buergi A1 Gernot Fritsche A1 Rosa Bellmann-Weiler A1 Günter Weiss A1 Thomas Müller A1 Timon Erik Adolph A1 Herbert Tilg YR 2020 UL http://gut.bmj.com/content/69/8/1543.abstract AB