1. Unit Liver Research, Medica Sur Clinic & Foundation, Mexico City 14050, Mexico
2. Faculty of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico
3. Internal Medicine Section, Central Military Hospital, Mexico City 11200, Mexico
4. Department of Hepatology, Service of Surgery and Obesity Clinic, General Hospital “Dr. Manuel Gea González”, Mexico City 14080, Mexico
5. Department of Gastroenterology, General Hospital of Northern Theater Command, Shenyang 110840, China