1. Global Nursing Research Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
2. Department of Nursing, The University of Tokyo Hospital, Tokyo, Japan.
3. Department of Nursing, Nippon Medical School Hospital, Tokyo, Japan.
4. Department of Nursing, Fukuseikai Hospital, Fukuoka, Japan.
5. Department of Gerontological Nursing/Wound Care Management, Division of Health Science and Nursing, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.