Botulinum Toxin Type A Injection Sites for Oral Commissure Ptosis

​ Conditions: Facial Aging; Melomental Folds; Oral Commissure Ptosis

Interventions: Drug: OnabotulinumtoxinA (Upper Depressor Anguli Oris Injection); Drug: OnabotulinumtoxinA (Lower Depressor Anguli Oris Injection)

Sponsors: Peking University

Not yet recruiting Conditions: Facial Aging; Melomental Folds; Oral Commissure Ptosis
Interventions: Drug: OnabotulinumtoxinA (Upper Depressor Anguli Oris Injection); Drug: OnabotulinumtoxinA (Lower Depressor Anguli Oris Injection)
Sponsors: Peking University
Not yet recruiting