1. Program on Reproductive Health and the Environment, University of California, San Francisco, San Francisco, California, USA
2. Simon Fraser University, Vancouver, British Columbia, Canada
3. Harvard School of Public Health, Harvard University, Boston, Massachusetts, USA
4. Office of Policy, U.S. Environmental Protection Agency, Washington, District of Columbia, USA
5. Environmental Defense Fund, Washington, District of Columbia, USA
6. Department of Obstetrics and Gynecology, Kaiser Permanente, Oakland, California, USA
7. University of Tennessee Health Science Center, Memphis, Tennessee, USA