1. Carruthers JD, Glogau RG, Blitzer A, Facial Aesthetics Consensus Group Faculty: Advances in facial rejuvenation: botulinum toxin type A, hyaluronic acid dermal fillers, and combination therapies-consensus recommendations. Plast Reconstr Surg 121, 5S–30S (2008)
2. Rzany, B., Fratila, A.A., Fischer, T.C., Hilton, S., Pavicic, T., Rothhaar, A., Sattler, G., Sommer, B., Pickett, A.: Recommendations for the best possible use of botulinum neurotoxin type a (Speywood units) for aesthetic applications. J Drugs Dermatol 12, 80–84 (2013)
3. Dessy, L.A., Fallico, N., Mazzocchi, M., Scuderi, N.: Botulinum toxin for glabellar lines: a review of the efficacy and safety of currently available products. Am J Clin Dermatol 12, 377–388 (2011)
4. Raspaldo, H., Baspeyras, M., Bellity, P., Dallara, J.M., Gassia, V., Niforos, F.R., Belhaouari, L., Consensus, G.: Upper- and midface anti-aging treatment and prevention using onabotulinumtoxin A: the 2010 multidisciplinary French consensus–part 1. J Cosmet Dermatol 10, 36–50 (2011)
5. Raspaldo, H., Gassia, V., Niforos, F.R., Michaud, T.: Global, 3-dimensional approach to natural rejuvenation: part 1–recommendations for volume restoration and the periocular area. J Cosmet Dermatol 11, 279–289 (2012)