Ginting, S., Firmansyah, I., Putra, D., Aldy, D., Pasaribu, S. and Lubis, C. 2016. Association between socioeconomic status and the prevalence of intestinal worm infection in primary school children. Paediatrica Indonesiana. 44, 3 (Oct. 2016), 106-10. DOI:https://doi.org/10.14238/pi44.3.2004.106-10.