1Liver Research Unit Medica Sur Clinic & Foundation, Mexico City, Mexico;
2Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico;
3Liver Cirrhosis Group, Department of Gastroenterology, General Hospital of Shenyang Military Area, Shenyang, China;
4Fourth Department of Internal Medicine and Institute of Medical Biochemistry and Laboratory Diagnostics, 1st Faculty of Medicine, Charles University, Prague, Czech Republic;
5Gastroenterology Department, Medical School, Pontifical Catholic University of Chile, Santiago, Chile.
Correspondence: Nahum Méndez-Sánchez, MD, MSc, PhD. E-mail: firstname.lastname@example.org.
Received December 22, 2018
Accepted June 25, 2019
Online date: July 17, 2019