Wiryadana, K., Putra, I.W., Rahayu, P.D., Pradnyana, M., Adelaida, M. and Sudarmaja, I. 2018. Risk factors of soil-transmitted helminth infection among elementary school students. Paediatrica Indonesiana. 57, 6 (Jan. 2018), 295-302. DOI:https://doi.org/10.14238/pi57.6.2017.295-302.