Vitriana, Vitriana, and Irma Ruslina Defi. “Physical Factors in Age-Related Physical Performance Decline in Older Adults at Lembaga Lansia Indonesia, West Java Branch”. Majalah Kedokteran Bandung, vol. 52, no. 3, Sept. 2020, pp. 160-6, doi:10.15395/mkb.v52n3.1992.