1. Department of Gastroenterology, Hospital General de Tomelloso, Tomelloso, Spain
2. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
3. Research Support Unit, Hospital General Mancha Centro, Alcázar de San Juan, Spain
4. Department of Gastroenterology, Hospital San Pedro de Alcántara, Cáceres, Spain