[1] Fdn IRCCS Ca Granda Osped Maggiore Policlin, Renal Transplantat, Milan, Italy
[2] Univ Milan, Dept Clin Sci & Community Hlth, Milan, Italy
[3] Barts Hlth NHS Trust, Royal London Hosp, Renal Transplantat, London, England
[4] Univ Milan, Dept Biomed Surg & Dent Sci, Milan, Italy