1. Newacheck, P. W., Strickland, B., Shonkoff, J. P., Perrin, J. M., McPherson, M., McManus, M., et al. (1998). An epidemiologic profile of children with special health care needs. Pediatrics, 102(1 Pt 1), 117–123.
2. Services, U. D. o. H. a. H. (1996). National Health Interview Survey: Appendix III, questionnaires and flashcards (pp. 141–163). USA: National Center for Health Statistics.
3. Bhushan, V., Paneth, N., & Kiely, J. L. (1993). Impact of improved survival of very low birth weight infants on recent secular trends in the prevalence of cerebral palsy. Pediatrics, 91(6), 1094–1100.
4. Health, N. I. o. (2012). www.clinicaltrials.gov . from www.clinicaltrials.gov .
5. Sanders, J. O., McConnell, S. L., King, R., Lanford, A., Montpetit, K., Gates, P., et al. (2006). A prospective evaluation of the WeeFIM in patients with cerebral palsy undergoing orthopaedic surgery. Journal of Pediatric Orthopedics, 26(4), 542–546.