Notes
1 Abstracted from: Bessell, A., Sell, D., Whiting, P., Roulstone, S., Albery, L., Perssson, M., Verhoeven, A., Burke, M., & Ness, A. R. (2013). Speech and language therapy interventions for children with cleft palate: A systematic review. The Cleft Palate-Craniofacial Journal, 50, e1-e17.
Source of funding and declaration of interests: not reported.