1. Institute for Medical Information Processing, Biometry and Epidemiology - IBE, Chair of Public Health and Health Services Research; LMU Munich; Munich Germany
2. Pettenkofer School of Public Health; Munich Germany
3. Department of Disease Control, Faculty of Infectious and Tropical Diseases; London School of Hygiene and Tropical Medicine; London UK
4. Institute of General Practice; Medical Faculty of the Heinrich-Heine University; Düsseldorf Germany