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Kono A, Kai I, Sakato C, Harker JO, Rubenstein LZ.Kono A, et al. Among authors: kai i.Aging Clin Exp Res. 2004 Aug;16(4):293-9. doi: 10.1007/BF03324554.Aging Clin Exp Res. 2004.PMID: 15575123Clinical Trial.
Kono A, Kai I, Sakato C, Rubenstein LZ.Kono A, et al. Among authors: kai i.Arch Gerontol Geriatr. 2007 Nov-Dec;45(3):233-42. doi: 10.1016/j.archger.2006.10.013. Epub 2007 Feb 12.Arch Gerontol Geriatr. 2007.PMID: 17296237
Kono A, Kai I, Sakato C, Rubenstein LZ.Kono A, et al. Among authors: kai i.J Gerontol A Biol Sci Med Sci. 2004 Mar;59(3):275-80. doi: 10.1093/gerona/59.3.m275.J Gerontol A Biol Sci Med Sci. 2004.PMID: 15031313
Ishizaki T, Kai I, Kobayashi Y, Matsuyama Y, Imanaka Y.Ishizaki T, et al. Among authors: kai i.Aging Clin Exp Res. 2004 Jun;16(3):233-9. doi: 10.1007/BF03327389.Aging Clin Exp Res. 2004.PMID: 15462467
Iwasa H, Yoshida Y, Kai I, Suzuki T, Kim H, Yoshida H.Iwasa H, et al. Among authors: kai i.J Psychosom Res. 2012 Feb;72(2):159-64. doi: 10.1016/j.jpsychores.2011.10.002. Epub 2011 Nov 8.J Psychosom Res. 2012.PMID: 22281459
Aragaki M, Saito T, Takahashi M, Kai I.Aragaki M, et al. Among authors: kai i.Health Serv Manage Res. 2007 Nov;20(4):220-6. doi: 10.1258/095148407782219021.Health Serv Manage Res. 2007.PMID: 17958967
Wakui T, Saito T, Agree EM, Kai I.Wakui T, et al. Among authors: kai i.Aging Ment Health. 2012;16(4):500-6. doi: 10.1080/13607863.2011.644263. Epub 2012 Feb 24.Aging Ment Health. 2012.PMID: 22360698Free PMC article.
Yokokawa Y, Kai I.Yokokawa Y, et al. Among authors: kai i.Nihon Koshu Eisei Zasshi. 2004 Nov;51(11):945-50.Nihon Koshu Eisei Zasshi. 2004.PMID: 15678986
Zheng YF, Saito T, Takahashi M, Ishibashi T, Kai I.Zheng YF, et al. Among authors: kai i.BMC Public Health. 2006 Nov 6;6:272. doi: 10.1186/1471-2458-6-272.BMC Public Health. 2006.PMID: 17083746Free PMC article.
Iwasa H, Kai I, Yoshida Y, Suzuki T, Kim H, Yoshida H.Iwasa H, et al. Among authors: kai i.Int J Geriatr Psychiatry. 2013 Aug;28(8):841-9. doi: 10.1002/gps.3890. Epub 2012 Sep 25.Int J Geriatr Psychiatry. 2013.PMID: 23008014