Retraction Note: BMC Infect Dis (2019) 19: 73
https://doi.org/10.1186/s12879-018-3647-y
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The authors have retracted this article [1] because of methodological inaccuracies and incorrect use of the PRISMA/PROSPERO guidelines of systematic reviews and meta-analyses in the article. A re-examination of the data suggests that the authors’ conclusions are based on a small subset of available literature.
All authors agree with this retraction.
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