1. Gastroenterology Department, Miguel Servet University Hospital, 50009 Zaragoza, Spain
2. Adipocyte and Fat Biology Laboratory (AdipoFat), Translational Research Unit, Miguel Servet University Hospital, 50009 Zaragoza, Spain
3. Instituto de Investigación Sanitaria (IIS) Aragon, 50009 Zaragoza, Spain
4. Gastroenterology Department, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain