1. Department of Health Science, Kitasato University School of Allied Health Sciences, Minami, Japan
2. Kitasato University Graduate School of Medical Sciences, Minami, Japan
3. Japan Organization of Occupational Health and Safety Kobe Rosai Hospital, Chuou, Japan
4. University of Occupational and Environmental Health, Kitakyushu, Japan
5. Sompo Health Support Inc., Chiyoda, Japan
6. Faculty of Policy Management, Keio University, Fujisawa, Japan