Janet W. Rich-Edwards is with the Division of Women’s Health, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, and the Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA. Carissa M. Rocheleau, Andrea L. Steege, James M. Boiano, and Christina C. Lawson are with the National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, OH. Ming Ding and Laura M. Katuska are with the Department of...