1. Institute of General Practice; Medical Faculty of the Heinrich-Heine-University Düsseldorf; Düsseldorf Germany
2. Family and Community Medicine Division; Hospital Italiano de Buenos Aires; Buenos Aires Argentina
3. Faculty of Human and Health Sciences; University of Bremen; Bremen Germany
4. Institute for Biometrics and Epidemiology; German Diabetes Center (Deutsches Diabetes-Zentrum/DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf; Düsseldorf Germany
5. Cochrane Netherlands; Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University; Utrecht Netherlands
6. Global Tuberculosis Programme; World Health Organization; Geneva Switzerland
7. Department of Nutrition and Food Safety; World Health Organization; Geneva Switzerland
8. Department of Noncommunicable Diseases; World Health Organization; Geneva Switzerland
9. Brigham and Women's Hospital; Harvard Medical School; Boston MA USA