Dang Richard H, Boonstra Jurjen J, Langers Alexandra M J
Department of Gastroenterology and Hepatology, Leiden University Medical Centre, Leiden, the Netherlands.
Gastroenterology. 2019 Jul;157(1):e1-e3. doi: 10.1053/j.gastro.2019.02.034. Epub 2019 Feb 27.