About the Authors

Yoshiki Ishikawa

Affiliations Department of Public Health, Jichi Medical University, Shimotuke-shi, Tochigi, Japan, Cancer Scan, Shibuya-ku, Tokyo, Japan

Sakiko Fukui

sfukui@redcross.ac.jp

Affiliation Department of Community Health Nursing, Graduate School of Nursing, The Japanese Red Cross University, Shibuya-ku, Tokyo, Japan

Toshiya Saito

Affiliation Cancer Scan, Shibuya-ku, Tokyo, Japan

Junko Fujita

Affiliation Department of Community Health Nursing, Graduate School of Nursing, The Japanese Red Cross University, Shibuya-ku, Tokyo, Japan

Minako Watanabe

Affiliation Department of Nursing, Ibaraki Christian University, Hitachi-shi, Ibaraki, Japan

Kazuhiro Yoshiuchi

Affiliation Department of Stress Sciences and Psychosomatic Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YI SF JF MW KY. Performed the experiments: YI SF JF MW KY. Analyzed the data: YI TS. Contributed reagents/materials/analysis tools: YI TS. Wrote the paper: YI.