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. 2018 Sep 8;2018:bcr2018225427. doi: 10.1136/bcr-2018-225427

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© BMJ Publishing Group Limited 2018. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Conditional growth curves for LSCM, LCES, RSCM and RCES showing the change in NMF over time with the halo (green) and without the halo (blue). LCES, left cervical erector spinae; LSCM, left sternocleidomastoid; NMF, normalised median frequency; RCES, right cervical erector spinae; RSCM, right sternocleidomastoid.