Ryoma joined WKC in 2015, having previously worked at Nagasaki University School of Medicine as Assistant Professor in charge of promotion of research activity and international collaboration. He currently works as a focal point of health emergencies, responsible for the communication with local/national government in Japan, WHO HQ and the Regional Offices. As the responsible officer for Health Emergency and Disaster Risk Management (Health EDRM), he coordinates the work of the secretariat of WHO Thematic Platform for Health EDRM Research Network (Health EDRM RN) and facilitates global research collaboration and related activities. Based on his background in psychiatry, he also works for WKC’s researches activities regarding mental health and dementia. After graduating from medical school, Ryoma began his career as a general practitioner, working with vulnerable populations such as older populations and people with disabilities. In 2011, he worked for disaster survivors of Great East Japan Earthquake as a member of Tokyo Metropolitan Disaster Relief Team.