Angraini, R., Dimyati, Y., Lubis, B., Pasaribu, S., & Lubis, C. (2016). Association between soil-transmitted helminthiasis and hemoglobin concentration in primary school children. Paediatrica Indonesiana, 45(1), 24-30. https://doi.org/10.14238/pi45.1.2005.24-30