Division of Gastroenterology;
Department of Medicine;
BronxCare Health System;
Bronx;
NY 10457;
United States;
Department of Medicine;
Nassau University Medical Center;
New York;
NY 11554;
United States;
Department of Medicine;
BronxCare Health System;
Bronx;
NY 10457;
United States;
Appendectomy; Clostridium difficile; Toxic megacolon; Colectomy; Gut microbiome;