1. Department of Environmental Toxicology, University of California, Davis, California
2. California Environmental Protection Agency, Sacramento, California
3. Division of Extramural Research and Training
4. National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
5. National Center for Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, Washington, DC
6. Department of Growth and Reproduction, Rigshospitalet, Copenhagen, Denmark
7. Department of Pediatrics, Baystate Children's Hospital, Springfield, Massachusetts
8. Medical Research Council Human Reproductive Sciences Unit, University of Edinburgh, Edinburgh, Scotland
9. Departments of Physiology and Pediatrics, University of Turku, Turku, Finland