Sianturi, P., Syarifuddin, A. and Saing, B. (2002) “Incidence of epilepsy among patients with cerebral palsy (CP) in Yayasan Pemeliharaan Anak Cacat (YPAC) – Medan”, Medical Journal of Indonesia, 11(3), pp. 158-63. doi: 10.13181/mji.v11i3.69.