Arizal, A., Antoni, A., Harahap, S., Sinuhaji, A. and Sutanto, A. 2018. Parents’ Knowledge on Diarrhea in a Plantation Area. Paediatrica Indonesiana. 34, 5-6 (Nov. 2018), 149-53. DOI:https://doi.org/10.14238/pi34.5-6.1994.149-53.