[1]
S. Z. Nasution, M. R. H. Amal, R. A. Ariga, C. T. Siregar, and W. D. Purba, “Nutritional Status of Elderly in Urban and Rural North Sumatera, Indonesia”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 10, no. 4, pp. 1639–1645, Aug. 2020.