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Contributors DP and TM are authors of several systematic reviews and therefore also engaged in updating systematic reviews. They worked together on several occasions, including updating clinical guidelines. DP had the idea for this paper and prepared the first draft of the manuscript, and TM prepared and conducted the survey. Both authors read and approved the final version of the manuscript. DP is the guarantor of the article.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.