Susan F. Wood, PhD, is Research Professor at the George Washington University School of Public Health and Health Services where her work focuses on the use of scientific knowledge in public policy. She served as Assistant Commissioner for Women's Health and Director of the Food and Drug Administration (FDA) Office of Women's Health (OWH) from November 2000 through August 2005. She resigned on principle over the continued delay of approval of emergency contraception over-the-counter by FDA.