1. Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago 8320000, Chile
2. Department of Gastroenterology, Hospital San Borja Arriarán, Santiago 8360160, Chile
3. Biomedical Sciences Institute, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
4. Fundación Diagnosis, Santiago 7500580, Chile
5. Red Salud Arauco, Santiago 7560994, Chile
6. La Jolla Institute for Immunology, San Diego, CA 92037, USA
7. Instituto de Nutrición y Tecnología de Alimentos, Facultad de Medicina Universidad de Chile, Santiago 8380453, Chile
8. Center of Medical Informatics and Telemedicine, University of Chile, Santiago 8380453, Chile