1. Carruthers JD, Carruthers JA. Treatment of glabellar frown lines with C. botulinum-A exotoxin. J Dermatol Surg Oncol. 1992;18(1):17–21.
2. Dorland’s Illustrated Medical Dictionary. 32 ed. Philadelphia: Elsevier Sauders; 2012. p. 1643.
3. Lacy DB, Tepp W, Cohen AC, DasGupta BR, Stevens RC. Crystal structure of botulinum neurotoxin type A and implications for toxicity. Nat Struct Biol. 1998;5(10):898–902.
4. Gallagher CJ. Basic science: BOTOX® Cosmetic. In: Carruthers J, Carruthers A, editors. Botulinum toxin. Philadelphia: Elsevier; 2012. p. 18–25.
5. Eisele KH, Fink K, Vey M, Taylor HV. Studies on the dissociation of botulinum neurotoxin type A complexes. Toxicon. 2011;57:555–65.