Sequential Administration of TrenibotulinumtoxinE and OnabotulinumtoxinA for Glabellar Lines: A Phase 1 Evaluation - C. William Hanke; Joely Kaufman-Janette; Steve H. Dayan; Grace West; Amy S. Weitzenfeld; Jie Shen; Stephanie Manson Brown; Mitchell F. Brin; Mitalee Tamhane (Toxicon, 2026)