1. Office of Women's Health, Office of the Commissioner, U.S. Food and Drug Administration, Silver Spring, Maryland, USA.
2. University of South Carolina School of Medicine, Greenville, South Carolina, USA.
3. Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, Maryland, USA.
4. Office of the Chief Scientist, Office of the Commissioner, U.S. Food and Drug Administration, Silver Spring, Maryland, USA.