Figure 9.
The length change of the philtrum (A, C) before and (B, D) after 1 month of botulinum toxin-A treatment of a muscle–fat pad mixed-type nasiolabial fold.

The length change of the philtrum (A, C) before and (B, D) after 1 month of botulinum toxin-A treatment of a muscle–fat pad mixed-type nasiolabial fold.

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