About the Authors

Akira Yokoyama

[email protected]

Affiliation National Hospital Organization Kurihama Medical and Addiction Center, Kanagawa, 239–0841, Japan

Tetsuji Yokoyama

Affiliation Department of Health Promotion, National Institute of Public Health, Saitama, 351–0104, Japan

Toshifumi Matsui

Affiliations National Hospital Organization Kurihama Medical and Addiction Center, Kanagawa, 239–0841, Japan, Department of Geriatric Medicine, Kyorin University Hospital, Tokyo, 181–8611, Japan

Takeshi Mizukami

Affiliation National Hospital Organization Kurihama Medical and Addiction Center, Kanagawa, 239–0841, Japan

Mitsuru Kimura

Affiliation National Hospital Organization Kurihama Medical and Addiction Center, Kanagawa, 239–0841, Japan

Sachio Matsushita

Affiliation National Hospital Organization Kurihama Medical and Addiction Center, Kanagawa, 239–0841, Japan

Susumu Higuchi

Affiliation National Hospital Organization Kurihama Medical and Addiction Center, Kanagawa, 239–0841, Japan

Katsuya Maruyama

Affiliation National Hospital Organization Kurihama Medical and Addiction Center, Kanagawa, 239–0841, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AY. Analyzed the data: TY. Contributed reagents/materials/analysis tools: T. Mizukami T. Matsui MK SM SH KM. Wrote the paper: AY TY.