1. Institute of Virology Faculty of Medicine and Medical Center University of Freiburg Freiburg Germany
2. Department of Anaesthesiology Intensive Care, Emergency and Pain Medicine University Hospital Wuerzburg Wuerzburg Germany
3. Institute for Evidence in Medicine Faculty of Medicine and Medical Center University of Freiburg Freiburg Germany
4. Cochrane Metabolic and Endocrine Disorders Group Institute of General Practice Medical Faculty Heinrich‐Heine‐University Duesseldorf Duesseldorf Germany
5. Institute of Medical Biometry and Statistics Faculty of Medicine and Medical Center University of Freiburg Freiburg Germany