1. Liver Unit and Digestive Department, H.G.U. Gregorio Marañón, Madrid, Spain
2. CIBEREHD, Instituto de Salud Carlos III, Madrid, Spain
3. Department of Anesthesiology, H.G.U. Gregorio Marañón, Madrid, Spain
4. Intensive Care Unit, H.G.U. Gregorio Marañón, Madrid, Spain
5. CIBERES, Instituto de Salud Carlos III, Madrid, Spain
6. School of Medicine, Complutense University, Madrid, Spain
7. Department of Internal Medicine, H.G.U. Gregorio Marañón, Madrid, Spain
8. Hospital General Universitario Gregorio Marañón, Liver Unit, Doctor Esquerdo 46, Madrid 28007, Spain