IncobotulinumtoxinA demonstrates safety and prolonged duration of effect in a dose-ranging study for glabellar lines. (January 2021) - Kerscher, Martina; Fabi, Sabrina; Fischer, Tanja; Gold, Michael; Joseph, John; Prager, Welf; Rzany, Berthold; Yoelin, Steve; Roll, Susanna; Klein, Gudrun; Maas, Corey