This letter is written to inform an important error in the methodology section of a systematic review article entitled "Treatment Effects for Dysphagia in Adults with Multiple Sclerosis: A Systematic Review" by Dalal Alali et al., which consequently resulted in a precise paradox probably and inadvertently affecting the search strategy, results, discussion, and/or conclusion of this systematic review.
Keywords: Deglutition; Dysphagia; Multiple sclerosis; Systematic review; Treatment.
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