1. Gastroenterology and Hepatology Department Miguel Servet University Hospital Zaragoza Spain
2. Instituto Aragones de Investigación Sanitaria and Traslational Research Unit Zaragoza Spain
3. Endocrinology and Nutrition Miguel Servet University Hospital Zaragoza Spain
4. Statistical Methods Department University of Zaragoza Zaragoza Spain
5. Translational Research Unit, Miguel Servet University Hospital Aragonese Institute of Health Sciences Zaragoza Spain