Institution: | 1. Department of Medicine, Division of Gastroenterology, Hospital Clínico Universidad de Chile, Dr. Carlos Lorca Tobar 999, Independencia, Región Metropolitana, Santiago, Chile;2. Division of Gastroenterology, Inflammatory Bowel Disease Program, Clínica Universidad de los Andes, Estoril 450, Las Condes, Región Metropolitana, Santiago, Chile;3. Division of Gastroenterology and Hepatology, Lynda K and David M Underwood Center for Digestive Disorders, Houston Methodist Hospital, Weill Cornell Medical College, Houston, TX, USA |