Anh, T. Q., P. T. T. Trang, and D. V. M. Ha. “Health-Related Quality of Life and Some Associated Factors Among the Elderly Living in Three Communes of Ha Nam Province, 2019”. Journal of Medical Research, vol. 141, no. 5, Sept. 2021, pp. 81-89, doi:10.52852/tcncyh.v141i5.214.