[1] Bern Univ Hosp, Dept Infect Dis, Bern, Switzerland
[2] Zurich Univ Hosp, Div Infect Dis & Hosp Epidemiol, Zurich, Switzerland
[3] Lausanne Univ Hosp, Div Infect Dis, Lausanne, Switzerland
[4] Geneva Univ Hosp, Div Infect Dis, Geneva, Switzerland
[5] Basel Univ Hosp, Div Infect Dis, Basel, Switzerland
[6] Reg Hosp Lugano, Div Infect Dis, Lugano, Switzerland
[7] Cantonal Hosp St Gallen, Div Infect Dis, St Gallen, Switzerland
[8] Cantonal Hosp Aarau, Div Infect Dis, Aarau, Switzerland