[1] Univ Nantes, Dept Biostat Clin Res & Subject Measure Hlth Sci, EA 4275, Nantes, France
[2] CHU Nantes, Inst Transplantat Urol Nephrol, F-44035 Nantes 01, France
[3] INSERM, U643, Nantes, France
[4] Univ Geneva, CRC, Geneva, Switzerland
[5] Univ Geneva, Dept Hlth & Community Med, Div Clin Epidemiol, Geneva, Switzerland
[6] Univ Hosp Geneva, Geneva, Switzerland
[7] TcLand Express, Nantes, France