Am J Gastroenterol 2020 Dec 24;Publish Ahead of Print. Epub 2020 Dec 24.
Department of Public Health Sciences, Henry Ford Health System, Detroit, Michigan, USA; Division of Gastroenterology and Hepatology, Henry Ford Health System, Detroit, Michigan, USA; Wayne State University School of Medicine, Detroit, Michigan, USA; Department of Population Health Sciences, Geisinger Clinic, Danville, Pennsylvania, USA; Center for Health Research, Kaiser Permanente-Northwest, Portland, Oregon, USA; Center for Integrated Health Research, Kaiser Permanente-Hawaii, Honolulu, Hawaii, USA; Center for Health Policy and Health Services Research, Henry Ford Health System, Detroit, Michigan, USA.