1. Department of Environmental
and Occupational Health, School
of Public Health and Health Services, George Washington University, Washington,
D.C. 20037, United States
2. Program on Reproductive Health and the Environment, University of California, San Francisco, Oakland, California 94607, United States
3. Environmental Chemistry Lab, California Department of Toxic Substances Control, Berkeley, California 94710, United States
4. Swedish Environmental Protection Agency, Stockholm SE-106 48, Sweden
5. Sequoia Foundation, La Jolla, California 92037, United States
6. Department of Microbiology, University of California, Davis, Davis, California 95616, United States
7. Biology Department, Morrill
Science Center, University of Massachusetts at Amherst, Amherst, Massachusetts 01003, United States