1. Department of Gastroenterology, Hepatology and Liver Transplantation Unit, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Mexico City Mexico
2. PECEM, Facultad de Medicina, Universidad Nacional Autónoma de México Mexico City Mexico
3. Department of Surgery, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Mexico City Mexico
4. Center for Liver Diseases University of Pittsburgh Medical Center Pittsburgh Pennsylvania USA
5. Liver Unit, Clinica Universidad de Navarra, Hepatology Program, Center for Applied Medical Research Pamplona Spain
6. Universidad Panamericana School of Medicine Mexico City Mexico
7. Department of Pathology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Mexico City Mexico
8. Department of Endocrinology and Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Mexico City Mexico
9. Department of Surgery University of Colorado Anschutz Medical Campus Denver Colorado USA