1. School of Public Health, Physiotherapy and Sports Science; University College Dublin; Dublin Ireland
2. Research Support Unit; Complejo Hospitalario La Mancha Centro; Alcázar de San Juan Spain
3. Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd); Madrid Spain
4. Department of Gastroenterology; Hospital General de Tomelloso; Tomelloso Spain