1. Rush Institute for Healthy Aging, Rush University Medical Center, Chicago, Illinois, USA
2. Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA
3. Vincent Memorial Obstetrics and Gynecology Service, Andrology Laboratory and In Vitro Fertilization Unit, Massachusetts General Hospital, Boston, Massachusetts, USA
4. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
5. Department of Obstetrics, Gynecology, and Reproductive Medicine and
6. Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
7. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA
8. Slone Epidemiology Center, Boston University, Boston, Massachusetts, USA