1 Department of Medicine, University of Michigan, Ann Arbor, Michigan.
2 Center for Neurointestinal Health, Division of Gastroenterology, Department of Medicine Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
3 Center for Liver Diseases, University of Chicago Medicine, Chicago, Illinois.
4 Callen-Lorde Community Health Center, New York, New York.
5 Section of General Internal Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts; GenderCare Center, Boston Medical Center, Boston, Massachusetts; The Fenway Institute, Boston, Massachusetts.
6 University of Toronto/Mount Sinai Hospital, Toronto, Ontario, Canada.