Sadeghvand, Shahram, et al. “Constipation in Children With Cerebral Palsy: Prevalence, Clinical Manifestations, and Polyethylene Glycol Vs. Lactulose Efficacy: Constipation With Cerebral Palsy and Polyethylene Glycol Combination With Lactulose”. Iranian Journal of Child Neurology, vol. 19, no. 3, June 2025, pp. 71-76, doi:10.22037/ijcn.v19i3.45043.