1. Li Ka Shing Knowledge Institute St. Michael's Hospital 209 Victoria Street, East Building Toronto Ontario M5B 1T8 Canada
2. MRC Biostatistics Unit Institute of Public Health Robinson Way Cambridge CB2 0SR UK
3. Department of Psychiatry and Psychology, School for Mental Health and Neuroscience Maastricht University The Netherlands
4. Department of Medical Biometry Institute for Quality and Efficiency in Health Care (IQWiG) Im Mediapark 8 50670 Cologne Germany
5. MRC Biostatistics Unit Hub for Trials Methodology Research Cambridge UK
6. Department of Statistics TU Dortmund University 44221 Dortmund Germany
7. Institute for Biometrics and Epidemiology, German Diabetes Center Leibniz Institute for Diabetes Research at Heinrich Heine University 40225 Düsseldorf Germany
8. School of Social and Community Medicine University of Bristol Bristol UK
9. Centre for Reviews and Dissemination University of York York UK
10. Department of Hygiene and Epidemiology University of Ioannina School of Medicine Ioannina Greece