Affiliation: | (1) Infection Control Program Division of Infectious Diseases, University Hospital of Geneva, 24, rue Micheli-du-Crest, CH-1211 Geneva 14, Switzerland;(2) Infection Control Program Division of Infectious Diseases, University Hospital of Geneva, 24, rue Micheli-du-Crest, CH-1211 Geneva 14, Switzerland;(3) Surgical Intensive Care Unit, University Hospital of Geneva, 24, rue Micheli-du-Crest, CH-1211 Geneva 14, Switzerland |