Internal Medicine;
Gastroenterology;
University of California at Los Angeles;
Los Angeles;
CA 90025;
United States;
The Vatche and Tamar Manoukian Division of Digestive Diseases;
University of California at Los Angeles;
Los Angeles;
CA 90095;
United States;
Department of Medicine;
Olive View-University of California at Los Angeles Medical Center;
Sylmar;
CA 91342;
United States;
David Geffen School of Medicine at UCLA;
Los Angeles;
CA 90095;
United States;
Gastroesophageal varices; Variceal screening; Advanced chronic liver disease; Cirrhosis; Non-invasive screening; Upper endoscopy;