[1] Juntendo Univ, Grad Sch Med, Dept Global Hlth Res, Bunkyo Ku, Hongo 2-1-1, Tokyo 1138421, Japan
[2] Juntendo Univ, Adv Res Inst Hlth Sci, Bunkyo Ku, Hongo 2-1-1, Tokyo 1138421, Japan
[3] Juntendo Univ, Fac Int Liberal Arts, Tokyo 1138421, Japan
[4] Kyorin Univ, Fac Social Sci, Tokyo 1818611, Japan
[5] Waseda Univ, Fac Int Liberal Arts, Tokyo 1690051, Japan
[6] Yonsei Univ, Software Digital Healthcare Convergence Coll, Dept Hlth Adm, Wonju 26493, South Korea
[7] Singapore Univ Social Sci, S R Nathan Sch Human Dev, Gerontol Programmes, 463 Clementi Rd, Singapore 599494, Singapore
[8] Singapore Univ Social Sci, S R Nathan Sch Human Dev, Serv Learning & Community Engagement, Ctr Experiential Learning, 463 Clementi Rd, Singapore 599494, Singapore
[9] Chiang Mai Rajabhat Univ, Fac Sci & Technol, Dept Publ Hlth, Chiang Mai 50300, Thailand
[10] Tokyo Dent & Med Univ, Dept Global Hlth Promot, Bunkyo Ku, 1-5-45 Yushima, Tokyo 1138510, Japan
[11] Tokyo Dent & Med Univ, Grad Sch Med & Dent Sci, Dept Family Med, Bunkyo Ku, 1-5-45 Yushima, Tokyo 1138510, Japan
[12] Yonsei Univ, Wonju Coll Med, Dept Prevent Med, Wonju 26426, South Korea
[13] Tokyo Metropolitan Inst Gerontol, Res Team Social Participat & Community Hlth, Itabashi Ku, 35-2 Sakae Cho, Tokyo 1730015, Japan
[14] Tokyo Ariake Univ Med & Hlth Sci, Fac Hlth Sci, Dept Judo Therapy, Tokyo 1350063, Japan
[15] Minist Hlth Labour & Welf, Div Hlth Elderly, Chiyoda Ku, 1-2-2 Kasumigaseki, Tokyo 1008916, Japan