[1] CHU Vaudois, Dept Med, Infect Dis Serv, CH-1011 Lausanne, Switzerland
[2] CHU Vaudois, Inst Microbiol, CH-1011 Lausanne, Switzerland
[3] CHU Vaudois, Dept Med, Serv Pneumol, CH-1011 Lausanne, Switzerland
[4] CHU Vaudois, Transplantat Ctr, CH-1011 Lausanne, Switzerland