A search strategy was developed and implemented under the guidance of experts on library services from one university, which included three terms for (1) treatment, (2) myofascial pain syndrome, and (3) randomized controlled trials. According to different databases, this strategy was adjusted to meet their requirements. The detailed search strategy of the six databases is listed in Supplemental Material 1 (Supplemental Digital Content 1, http://links.lww.com/JS9/B312). In addition, the reference lists of studies included in this review, and the reference lists studies included in previous reviews were manually screened to identify additional studies.
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