[1] Univ Hosp Leuven, Dept Hematol, Leukemia & Stem Cell Transplantat Unit, Louvain, Belgium
[2] CHU Vaudois, Infect Dis Serv, Dept Med, Lausanne, Switzerland
[3] Hop Univ Strasbourg, Dept Hematol & Oncol, Strasbourg, France
[4] Univ Lausanne, Lausanne, Switzerland
[5] Uniklin Koln, Innere Med Klin 1, Cologne, Germany
[6] ZKS Koln BMBF 01KN0706, Cologne, Germany
[7] Univ Hosp, Div Infect Dis, Basel, Switzerland
[8] Univ Hosp, Hosp Epidemiol, Basel, Switzerland
[9] CHR Verviers, Dept Hematol, Verviers, Belgium
[10] Inst Gustave Roussy, Pole Microbiol & Malad Infect, Villejuif, France
[11] Univ Wurzburg, Med Ctr, Dept Internal Med 2, Wurzburg, Germany
[12] Innsbruck Med Univ, Div Hyg & Med Microbiol, Innsbruck, Austria
[13] Univ Paris 07, Paris, France
[14] St Louis Hosp, Assistance Publ Hop Paris, Stem Cell Transplantat Unit, Paris, France
[15] Univ Hosp, Dept Hematol, Grenoble, France
[16] Henri Mondor Teaching Hosp, Assistance Publ Hop Paris, Dept Hematol, Creteil, France
[17] Univ Paris, Creteil, France