1 Department of Health Policy and Management, School of Medicine, Keio University, Tokyo, Japan; Department of Global Health Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
2 Department of Mathematical and Computing Science, Tokyo Institute of Technology, Tokyo, Japan.
3 Department of Mental Health and Psychiatric Nursing, School of Nursing, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan.
4 Graduate School of Public Health, St. Luke's International University, Tokyo, Japan.
5 Institute for Business and Finance, Waseda University, Tokyo, Japan.
6 Department of Sustainable Health Science, Center for Preventive Medical Sciences, Chiba University, Chiba, Japan.
7 Department of Health Policy and Management, School of Medicine, Keio University, Tokyo, Japan.
8 Department of Global Health Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.