Use of botulinum toxin in musculoskeletal pain.

F1000Res · 2013 · PMC3968894 · PMID 24715952

Europe PMC DOI

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showed a trendno p-value reported

Other secondary measures showed a trend in improvements, but were not statistically significantly different between treatment groups.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.