Månum, Grethe, Reidun Jahnsen, Johan Kvalvik Stanghelle, Leiv Sandvik, and Anne Keller. “Effects of Botulinum Toxin A in Ambulant Adults With Spastic Cerebral Palsy: A Randomized Double-Blind Placebo Controlled-Trial”. Journal of Rehabilitation Medicine 43, no. 4 (February 1, 2011): 338–347. Accessed February 14, 2025. https://medicaljournalssweden.se/jrm/article/view/16194.