Clinical, Cosmetic and Investigational Dermatology Onset and duration of effect of incobotulinumtoxinA, onabotulinumtoxinA, and abobotulinumtoxinA in the treatment of glabellar frown lines:a randomized, double-blind study: Rappl T et al.

Clinical, Cosmetic and Investigational Dermatology 2013:6 211–219
Thomas Rappl  1
Daryousch Parvizi  1
Herwig Friedl  2
Maria Wiedner  1
Simone May  1
Bettina Kranzelbinder  3
Paul Wurzer   1
Bengt Hellbom  1,†
1   Department of Plastic and Reconstructive Surgery, Medical University Graz, Graz, Austria;
2  Institute of Statistics, Graz University of Technology, Graz, Austria;
3  Department of Dermatology, Medical University Graz, Graz, Austria
†  Professor Bengt Hellbom passed away in September 2012