Grosset, Donald G., et al. “Switch from AbobotulinumtoxinA (Dysport®) to IncobotulinumtoxinA (Xeomin®) Botulinum Toxin Formulation: A Review of 257 Cases”. Journal of Rehabilitation Medicine, vol. 47, no. 2, Oct. 2014, pp. 183-6, doi:10.2340/16501977-1895.