Hamano Tsuyoshi Center for Community-Based Health Research and Education (COHRE), Organization for the Promotion of Project Research, Shimane University, Izumo, Japan, Department of Environmental and Preventive Medicine, Shimane University School of Medicine, Izumo, Japan
Kimura Yoshinari Department of Geography, Graduate School of Literature and Human Sciences, Osaka City University, Osaka, Japan
PUBLIC LIBRARY SCIENCE
Faculty of Medicine
Funding for this study was provided by the Ministry of Education, Culture, Sports, Science and Technology. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.