1. 1) Cabinet Office, Government of Japan: Status of aging and implementation status of measures for an aging society in FY2017: https://www8.cao.go.jp/kourei/english/annualreport/2018/2018pdf_e.html. accessed January 25, 2023.
2. 2) Ministry of Health, Labour and Welfare of Japan: About facility services: https://www.mhlw.go.jp/file/05-Shingikai-12601000-Seisakutoukatsukan-Sanjikanshitsu_Shakaihoshoutantou/0000025314.pdf. accessed January 25, 2023.
3. 3) Ministry of Health, Labour and Welfare of Japan: A research project on care methods for addressing the increasingly serious difficulties of nursing care facilities: https://www.mri.co.jp/knowledge/pjt_related/roujinhoken/dia6ou00000204mw-att/H30_098_2_report.pdf. accessed January 25, 2023.
4. 4) World Health Organization: WHO hand hygiene technical reference manual: http://apps.who.int/iris/bitstream/10665/44196/1/9789241598606_eng.pdf. accessed January 25, 2023, 2019a.
5. 5) World Health Organization: WHO guidelines on hand hygiene in health care: http://apps.who.int/iris/bitstream/handle/10665/44102/9789241597906_eng.pdf;jsessionid=A6B45FE37B8328F0D2A3159754A3E6E3?sequence=1. accessed January 25, 2023, 2019b.