1. Department of Nephrology and Renal Transplantation Instituto Clínic de Nefrologia y Urologia Hospital Clinic de Barcelona Barcelona Spain
2. Laboratori Experimental de Nefrologia i Trasplantament Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) Barcelona Spain
3. Red de Investigación Renal Madrid Spain
4. Medical Statistics Core Facility IDIBAPS Barcelona Spain
5. Biostatistics Unit Faculty of Medicine Universitat Autònoma de Barcelona Barcelona Spain
6. Department of Immunology Hospital Clinic de Barcelona Barcelona Spain
7. Liver Transplant Unit, Liver Unit Hospital Clínic de Barcelona IDIBAPS Centro de Investigación Biomédica en Red de Enfermedes Hepáticas y Digestivas University of Barcelona Barcelona Spain