About the Authors

Tsuyoshi Hamano

thamano@med.shimane-u.ac.jp

Affiliations Center for Community-based Health Research and Education, Organization for the Promotion of Project Research, Shimane University, Izumo, Japan, Department of Environmental and Preventive Medicine, Shimane University School of Medicine, Izumo, Japan

Naomi Kawakami

Affiliation Waseda Institute of Sport Sciences, Waseda University, Tokorozawa, Japan

Xinjun Li

Affiliation Center for Primary Health Care Research, Lund University, Malmö, Sweden

Kristina Sundquist

Affiliations Center for Primary Health Care Research, Lund University, Malmö, Sweden, SPRC, Stanford School of Medicine, Stanford University, Stanford, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TH NK KS. Performed the experiments: NK KS. Analyzed the data: XL. Contributed reagents/materials/analysis tools: KS. Wrote the paper: TH NK KS.