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Dear Editor,
We appreciate the interest in our recent meta-analysis1 and welcome the opportunity to reply.2
First, with regard to methodological quality of the studies included in our systematic review, we totally agree with the comment regarding the need for a specific tool to evaluate the risk of bias in non-randomised intervention studies. Despite the low quality, no trials were excluded according to this quality. In our meta-analysis, we chose to include all studies and to …
Footnotes
Contributors AGH conceptualised and designed the study, drafted the initial manuscript and approved the final manuscript as submitted. All authors revised the manuscript and approved the final manuscript as submitted.
Competing interests None declared.
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Provenance and peer review Commissioned; externally peer reviewed.