Okabayashi, Satoe http://orcid.org/0000-0001-9919-6768
Kawamura, Takashi
Wakai, Kenji
Ando, Masahiko
Tsushita, Kazuyo
Ohira, Hideki
Ukawa, Shigekazu
Tamakoshi, Akiko
Funding for this research was provided by:
Japan Society for the Promotion of Science (JP15390197, JP26520105)
Mitsui Sumitomo Insurance Welfare Foundation
Article History
Received: 12 February 2019
Accepted: 15 April 2019
First Online: 6 May 2019
Ethics approval and consent to participate
: As we have written in the methods, for informed consent, an opt-out approach was adopted from 1996 to 2001 and individual written informed consent was obtained thereafter. The study was approved by the Ethics Committees of Nagoya University Graduate School of Medicine, the National Center for Geriatrics and Gerontology of Japan, Aichi Medical University of Medicine, and Hokkaido University Graduate School of Medicine.
: Not applicable.
: The authors declare that they have no competing interests.
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