Arrasyid, N. K., Sinambela, M. N., Tala, Z. Z., Darlan, D. M., & Warli, S. M. (2017). Correlation between Soil-Transmitted Helminths Infection and Serum Iron Level among Primary School Children in Medan. Open Access Macedonian Journal of Medical Sciences, 5(2), 117–120. https://doi.org/10.3889/oamjms.2017.016