Angraini, Rita, Y Dimyati, Bidasari Lubis, Syahril Pasaribu, and Chairuddin Lubis. 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.