1. Department of Nephrology and Kidney Transplantation Hospital Clínic Barcelona Spain
2. Laboratori Experimental de Nefrologia i Trasplantament (LENIT) Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) Barcelona Spain
3. Department of Immunology Hospital Clínic Barcelona Spain
4. Department of Infectious Diseases Hospital Clínic Barcelona Spain
5. Red de Investigación Renal (REDINREN) Madrid Spain
6. Immunoal·lergia Clínica Respiratoria i Experimental (IRCE) Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) Barcelona Spain
7. Red Nacional de Alergia, Asma, Reacciones Adversas y Alérgicas (ARADyAL) Instituto de Salud Carlos III (ISCIII) Madrid Spain
8. Department of Preventive Medicine and Epidemiology Hospital ClinicUniversitat de Barcelona Barcelona Spain
9. Medical Statistics Core Facility Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) Barcelona Spain
10. Biostatistics Unit Faculty of Medicine Universitat Autònoma de Barcelona Bellaterra Spain