1 Hepatology Program, CIMA, University of Navarra, Pamplona, Spain; Maite G. Fernandez-Barrena, Hepatology Program, CIMA, University of Navarra, Pamplona, Spain; CIBERehd, Instituto de Salud Carlos III, Madrid, Spain; Instituto de Investigaciones Sanitarias de Navarra IdiSNA, Pamplona, Spain.
2 Hepatology Program, CIMA, University of Navarra, Pamplona, Spain; CIBERehd, Instituto de Salud Carlos III, Madrid, Spain; Instituto de Investigaciones Sanitarias de Navarra IdiSNA, Pamplona, Spain. Electronic address: maavila@unav.es.