Miró, O.; Campistol, J. M.; Ribé, A.; Nicolàs, J. M.; Nadal, P.; Miró O.; Department of Internal Medicine, Hospital Clinic i Provincial, University of Barcelona; Campistol J. M.; Renal Transplant Unit, Hospital Clinic i Provincial, University of Barcelona; Ribé A.; Department of Pathology, Hospital Clinic i Provincial, University of Barcelona; Nicolàs J. M.; Department of Internal Medicine, Hospital Clinic i Provincial, University of Barcelona; Nadal P.; Department of Internal Medicine, Hospital Clinic i Provincial, University of Barcelona