1. Gastroenterology and Hepatology Department University Hospital Miguel Servet Zaragoza Spain
2. Instituto Aragonés Investigación Sanitaria Zaragoza Spain
3. Endocrinology and Nutrition University Hospital Miguel Servet Zaragoza Spain
4. Statistical Methods Department University of Zaragoza Zaragoza Spain
5. Translational Research Unit, Miguel Servet University Hospital Instituto Aragonés de Ciencias de la Salud Zaragoza Spain