Dr Geoff Foster trained in medicine in London and took up an appointment in 1985 as a specialist pediatrician with the government of Zimbabwe. In 1987, he founded Family AIDS Caring Trust (FACT), a faith-based nongovernmental organization and one of Africa's first AIDS service organizations. During the 1990s, FACT pioneered HIV/AIDS care, prevention and training programs including a widely replicated, community-based model supporting orphans and vulnerable children. Carol Levine is currently director of the Families and Health Care Project at the United Hospital Fund in New York City. She also directs The Orphan Project: Families and Children in the HIV Epidemic, which she founded in 1991. She was director of the Citizens Commission on AIDS in New York City from 1987 to 1991. John Williamson is the senior technical advisor for the Displaced Children and Orphans Fund (DCOF) of the U.S. Agency for International Development (USAID), supporting programming for children affected by armed conflict, street children, and children affected by AIDS. Since 1994, he has written or contributed to publications concerning children orphaned or otherwise made vulnerable by HIV/AIDS, including the Children on the Brink series.