1. Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
2. Becton Dickinson Kiestra, Le Pont-de-Claix, France
3. Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
4. ADMED, Department of Microbiology, La Chaux-de-Fonds, Switzerland