Perhaps this study will bring a smile to your face...
Hontanilla B, Olivas J, Cabello Á, Marré D. Cross-Face Nerve Grafting versus
Masseteric-to-Facial Nerve Transposition for Reanimation of Incomplete Facial
Paralysis: A Comparative Study Using the FACIAL CLIMA Evaluating System. Plast Reconstr Surg. 2018 Aug;142(2):179e-191e
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