Corresponding Author

Dia Foundation for Research on Ageing Societies, Tokyo, Japan

Research Department, Institute for Health Economics and Policy, Association for Health Economics Research and Social Insurance and Welfare, Tokyo, Japan

Correspondence: Dr Rumiko Tsuchiya-Ito PT MPH PhD, Research Department, Institute for Health Economics and Policy, Association for Health Economics Research and Social Insurance and Welfare No.11 Toyo-kaiji Bldg.2F, 1-5-11, Nishi-Shimbashi, Minato-ku, Tokyo, 105-0003 Japan. Email: rumiko.tsuchiya@ihep.jp