Hasibuan, B., Naim, M., Lubis, A., Pasaribu, S. and Lubis, C. (1989) “Oxyuriasis at the Department of Pediatrics, Dr. Pirngadi Hospital, Medan”, Paediatrica Indonesiana, 29(1-2), pp. 8-12. doi: 10.14238/pi29.1-2.1989.8-12.