Figueroa, R., Seino, S., Yabushita, N., Okubo, Y., Nemoto, M., Jung, S., & Tanaka, K. (2015). Cross-Validity and Reliability of the Age Scale for Assessing Activities of Daily Living among Japanese Community-Dwelling Adults Aged 75 Years or Older. Journal of Aging and Gerontology, 3(1), 17–23. https://doi.org/10.12974/2309-6128.2015.03.01.3