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. 2022 Sep 15;9:956188. doi: 10.3389/fmed.2022.956188

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Copyright © 2022 Wu, Luan, Pranata, Witchalls, Adams, Bousie and Han.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Forest plot of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)-pain (A), WOMAC-stiffness (B), WOMAC-function (C), and WOMAC-total (D) in high intensity laser therapy (HILT) vs. Placebo laser (plus exercise).