Fig. 1

OnabotulinumtoxinA 150 units protocol. A 5 units (1 injection site) in procerus muscle, 5 units (1 injection site) in each corrugator muscle, and 5 units (2 injections sites) each frontalis muscle. B 12.5 units (2 injection sites) each temporalis muscle. C 12.5 units (2 injection sites) each occipitalis muscle. D 12.5 (2 injection sites) each splenius muscle. E 25 units (3 injection sites) each trapezius muscle