1 Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, University Hospital Wurzburg, Wurzburg, Bayern, Germany.
2 Institute of General Practice, Heinrich-Heine-Universitat Dusseldorf, Dusseldorf, Germany.
3 Evidence-Based Oncology, Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.
4 Department of Infectious Diseases and Respiratory Medicine, Humboldt-Universitat zu Berlin, Berlin, Germany.
5 Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, University Hospital Wurzburg, Wurzburg, Bayern, Germany weibel_s@ukw.de.