Gayle Martin is a senior economist and currently leads the Africa-wide Service Delivery Indicators (SDI) program. Since joining the Bank in 1997, she has worked in East and Southern Africa, South Asia as well as East Asia. Prior to her current position, she worked at the Bank’s Independent Evaluation Group. She holds a doctoral degree from Harvard University in Health Economics, a graduate degree in Epidemiology and Biostatistics from the University of Cape Town and her first degree was in Dental Surgery from the University of the Western Cape. Her research interests include health economics, public finance and the economics of service delivery. She has served as a peer reviewer on several health policy research journals and as an external peer reviewer to the South African Medical Research Council. Prior to joining the Bank in 1997 she practiced as a dentist in Guguletu Township, Cape Town and held an appointment at the South African Medical Research Council. She also served as a Board Member of the South African Health Insurance Regulator.