Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Flow diagram for the selection of patients for the study population. MUHC McGill University Health Centre (Montreal, Quebec); RUGBE Registry on nonvariceal Upper Gastrointestinal Bleeding and Endoscopy; UGIB Upper gastrointestinal bleeding
