1. Risenbaum P, Paneth N, Leviton A, Goldstein M, Bax M, Daniano D, et al. A report: the definition and classification of cerebral palsy. Dev Med Child Neurol Suppl. 2007;109:8–14.
2. National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention. Facts about cerebral palsy. http://www.cdc.gov/ncbdd/cp/facts/html . Accessed 25 Oct 2015.
3. Fairhurst C. Cerebral palsy: the whys and hows. Arch Dis Child Educ Pract Ed. 2012;97(4):122–31. doi: 10.1136/edpract-2011-300593 .
4. National Institute of Neurological Disorders and Stroke. Cerebral palsy: hope through research. National Institutes of Health; 2015. http://www.ninds.nih.gov/disordersofcerebralpalsy/detail_cerebral_palsy.htm . Accessed 9 Sept 2015.
5. Center for Disease Control and Prevention. Facts about cerebral palsy. http://ninds.nih.gov/ncbddd/cp/facts.html . Accessed 9 Sept 2015.