Prior to arriving at Tsao, he worked for the WHO, as a technical lead for UHC, population ageing, sustainable financing and health systems development, with a particular interest in ageing in South-East and East Asia. He was also a member of the Innovations for Healthy Ageing team at the WHO HQ Centre for Health Development, Kobe, Japan, from 2015-2018. Before this, he was the Global Health Policy and Programs Advisor for HelpAge International, London Secretariat, where he helped deliver health care and healthy-ageing programs in over 20 low- and middle-income countries. Paul has an Epidemiology, Social Science and Health Services Research background. He was both a graduate and a Fellow at Mansfield College, University of Oxford, and has been active in international health development, as well as health services research and development since 1997.