1. Graduate School of Medicine, Nagoya University, Nagoya, Japan
2. Tokyo Fureai Medical Co-op Research & Education Center, Tokyo, Japan
3. Department of Pulmonary Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Japan
4. Department of Home Care Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
5. National Center for Geriatrics and Gerontology, Obu, Japan
6. Department of Home Care and Regional Liaison Promotion, National Center for Geriatrics and Gerontology, Obu, Japan