1. Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, Kagoshima, Japan
2. Center for Community-Based Healthcare Research and Education (CoHRE), Head Office for Research and Academic Information, Shimane University, Izumo City, Japan
3. Canvas Inc., Matsue City, Japan
4. Center for Primary Health Care Research, Department of Clinical Sciences Malmö, Lund University, Malmö, Sweden