A Phase-III Noninferiority, Randomized Controlled Trial of Letibotulinum Toxin A for the Improvement of Moderate-to-Severe Glabellar Wrinkles in China by Yun Xie, MD, Xiumin Yang, MD, PhD, Hong Liang, MD, PhD, Hongliang Bo, MD, PhD, Jianyun Lu, MD, PhD, Qing Guo, MD, Li Li, MD, PhD, Hyoung-jin Moon, MD, Qingfeng Li, MD, PhD

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