About the Authors
- Shinya Ishii
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Affiliation Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655 Japan
- Tomoki Tanaka
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Affiliation Institute of Gerontology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Masahiro Akishita
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Affiliation Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655 Japan
- Yasuyoshi Ouchi
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Affiliation Federation of National Public Service Personnel Mutual Aid Associations, Toranomon Hospital, 2-2-2, Toranomon, Minato-ku, Tokyo 105-8470, Japan
- Tetsuo Tuji
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Affiliation Institute of Gerontology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Katsuya Iijima
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* E-mail: iijima@iog.u-tokyo.ac.jp
Affiliation Institute of Gerontology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- for the Kashiwa study investigators
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¶Membership of the Kashiwa study investigators is provided in the Acknowledgments.
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: SI KI MA. Analyzed the data: SI. Contributed reagents/materials/analysis tools: SI. Contributed to the writing of the manuscript: SI. Contributed substantially to revision: SI KI T. Tanaka MA YO T. Tuji KI. Contributed to data collection: SI KI T. Tanaka T. Tuji.