1. Institute for Evidence in Medicine (for Cochrane Germany Foundation), Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
2. Department of Dermatology and Allergology, Technical University of Munich, München, Germany
3. Division of General Practice and Family Medicine, Department of Health Services Research, University of Oldenburg, Oldenburg, Germany
4. Department of Neurology, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
5. National Reference Centre for Borrelia, Bavarian Health and Food Safety Authority, Oberschleißheim, Germany
6. Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany