1. MRC Biostatistics Unit , University of Cambridge , Cambridge , UK
2. University of California San Diego , San Diego , USA
3. Harvard University , Cambridge , USA
4. Population Health Sciences, Bristol Medical School , University of Bristol , Bristol , UK
5. Glasgow Caledonian University , Glasgow , UK
6. Public Health Scotland , Glasgow , Scotland
7. Department of Mathematics and Statistics , Boston University , Boston , USA
8. Merck & Co., Inc. , Kenilworth , NJ , USA
9. Department of Population Medicine , Harvard Pilgrim Health Care Institute and Harvard Medical School , Boston , USA
10. Department of Biostatistics , Harvard T. H. Chan School of Public Health , Boston , USA