Impact of Hyponatremia after Renal Transplantation on Decline of Renal Function, Graft Loss and Patient Survival: A Prospective Cohort Study oleh Lena Berchtold, Anja Filzer, Rita Achermann, Vasileios Devetzis, Suzan Dahdal, Marco Bonani, Aurelia Schnyder, Dela Golshayan, Patrizia Amico, Uyen Huynh-Do, Sophie de Seigneux, Spyridon Arampatzis, on behalf of Swiss Transplant Cohort Study Collaborators