Cathy Zimmerman, PhD, is a senior staff member of the Gender, Violence and Health Centre (GVHC), of the Social and Mathematical Epidemiology Group (SaME) at the London School of Hygiene & Tropical Medicine. Dr. Zimmerman has conducted some of the first-ever research on health and human trafficking, including two studies in Europe on the health of women in post-trafficking service settings. She is currently leading a program of global research on human trafficking, including a multi-site intervention evaluation of the International Labour Organization’s complex trafficking prevention program in South Asia and the Middle East, multi-country studies on health and human trafficking in the Mekong subregion, South America, Central Asia and research in the United Kingdom for the UK Department of Health. She is a co-author of the WHO Ethical and Safety Recommendations for Interviewing Trafficked Women and co-editor of Caring for Trafficked Persons: Guidance for Health Care Providers (2009). She also conducts research on gender-based violence among asylum-seeking women and in conflict-affected settings and coordinates regularly with organizations providing services for vulnerable migrants. Before coming to LSHTM, Dr. Zimmerman carried out some of the first-ever research on domestic violence in Cambodia and founded a local NGO, Project Against Domestic Violence.