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. 2018 Jan 20;38(5):463–476. doi: 10.1093/asj/sjx238

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© 2018 The American Society for Aesthetic Plastic Surgery, Inc.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 3. — Measurement of the cross-sectional area of the zygomaticus major and digastric muscles using ultrasound images of a 30-year-old woman. (A) Anatomical position of the zygomaticus major muscle, (B) probe position for the digastric muscle, cross-sectional area of the digastric muscle, (C) cross-sectional area of the zygomaticus major initially, and (D) after the sessions, (E) anatomical position of the digastric muscle, (F) probe position for the zygomaticus major, (G) initially, and (H) after the sessions.