1Channing Laboratory, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
2GlaxoSmithKline R&D, Worldwide Epidemiology (Oncology), Collegeville, PA, USA
3Departments of Nutrition and Epidemiology, Harvard School of Public Health, Boston, MA, USA
4Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
5Harvard Radiation Oncology Program, Boston, MA, USA
6Division of Preventive Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
7Massachusetts Veterans Epidemiology Research and Information Center (MAVERIC), VA Boston Healthcare System, MA, USA
8Cancer Prevention Research Unit, Departments of Medicine and Oncology, Lady Davis Research Institute of the Jewish General Hospital and McGill University, Montreal, Canada