[1]
M. . Lumbantoruan, A. . Sirait, and J. Aritonang, “Anxiety Study for the Elderly During the Covid-19 Pandemic: Kajian Kecemasan Lansia Di Masa Pandemi Covid-19”, Ahmar Metastasis Health J., vol. 1, no. 2, pp. 43–48, Sep. 2021.