1. Department of Medical Physiology (J.E.P., I.C.C.), School of Medicine, University Universidad San Pablo-CEU, 28668 Madrid, Spain
2. Department of Medical Physiology (J.E.P., M.G.-F., J.R., S.G.-B., I.C.C.), School of Medicine, University of Málaga, 29071 Málaga, Spain
3. Department of Internal Medicine (J.M.), Liver Unit, University of Córdoba, 14080 Córdoba, Spain