[1] Univ Hosp Geneva, Div Primary Care Med, Dept Community Med & Primary Care, Geneva, Switzerland
[2] Univ Geneva, CH-1211 Geneva 4, Switzerland
[3] CHU Vaudois, Infect Dis Serv, Dept Med, Vaudois, Switzerland
[4] Univ Lausanne, CH-1015 Lausanne, Switzerland
[5] Univ Hosp Geneva, Div Cardiol, Dept Internal Med, Geneva, Switzerland
[6] CHU Vaudois, Transplantat Ctr, Vaudois, Switzerland
[7] CHU Vaudois, Inst Microbiol, Vaudois, Switzerland