Nasution, R. K. A., Nasution, B. B., Lubis, M. and Lubis, I. N. D. . (2019) “Prevalence and Knowledge of Soil-Transmitted Helminth Infections in Mandailing Natal, North Sumatera, Indonesia”, Open Access Macedonian Journal of Medical Sciences, 7(20), pp. 3443–3446. doi: 10.3889/oamjms.2019.441.