Ultrasonographic observation of the masseter muscle after injection of different botulinum toxin type A.
Zhujun LiZirong LiYun-Zhu LiRuijia DongCheng ChenJiuzuo HuangZenan XiaNanze YuXiao LongPublished in: Journal of cosmetic dermatology (2022)
Different types of BoNT-A may induce different changes in the masseter.