1. Division of Infectious Diseases and Hospital Epidemiology; University Hospital Zurich; Zurich Switzerland
2. Division of Pulmonary Medicine; University Hospital Zurich; Zurich Switzerland
3. Institute of Surgical Pathology; University Hospital Zurich; Zurich Switzerland
4. Institute of Diagnostic and Interventional Radiology; University Hospital Zurich; Zurich Switzerland
5. Institute of Medical Microbiology; University of Zurich; Zurich Switzerland