Acute pain management during facial injection of botulinum toxin: an evidence-based systematic review.
Azzopardi
Ernest A
EA
Department of Plastic, Reconstructive, and Aesthetic Surgery; Wexham Park Hospital; Berkshire, United Kingdom (Azzopardi) Department of Plastic, Reconstructive and Burns Surgery; Welsh Center for Burns and Plastic Surgery; Morriston Hospital; Swansea, United Kingdom (Whitaker).
Whitaker
Iain S
IS