[1] Univ Tsukuba, Grad Sch Comprehens Human Sci, Dept Hlth Serv Res, Ibaraki, Japan
[2] Univ Tsukuba, Inst Med, Dept Hlth Serv Res, Ibaraki, Japan
[3] Natl Ctr Global Hlth & Med, Diabet & Metab Informat Ctr, Res Inst, Tokyo, Japan
[4] Univ Tsukuba, Hlth Serv Res & Dev Ctr, Ibaraki, Japan
[5] Natl Ctr Global Hlth & Med, Inst Global Hlth Policy Res, Bur Int Hlth Cooperat, Tokyo, Japan
[6] Natl Ctr Global Hlth & Med, Dept Diabet Endocrinol & Metab, Tokyo, Japan
[7] Hlth Dept Tsukuba City, Ibaraki, Japan
[8] Natl Ctr Neurol & Psychiat, Natl Inst Mental Hlth, Dept Publ Mental Hlth Res, Tokyo, Japan
[9] Natl Ctr Global Hlth & Med, Diabet Res Ctr, Res Inst, Tokyo, Japan
[10] Univ Tokyo, Grad Sch Med, Dept Diabet & Metab Dis, Tokyo, Japan