Dr. Than Tun Sein is a former Director of Sociomedical Research of Department of Medical Research of Ministry of Health and Sports, Myanmar. Prof Than Tun Sein was awarded the prestigious Leon Bernard Foundation Prize in 2007 at the World Health Assembly for outstanding service in the field of social medicine research. He worked as a member of the WHO/TDR Scientific Working Group on Intervention and Implementation Research from 2016 till 2020. He is considered a pioneer in the development of health equity research methodology in Myanmar, and he is currently a part-time Professor in the Anthropology Department, Yangon University'.