Retraction: Calcium Channel Blockers and Risk of Breast Cancer: A Meta-Analysis of 17 Observational Studies.

1], concerns were raised about errors in the article and the scientific soundness of the work.The PLOS ONE Editors had the article reassessed by a member of our Editorial Board and one of the journal's Statistical Advisors with expertise in meta-analyses.This assessment confirmed that there are reporting errors in the published article as well as concerns about the study design, data analyses, and conclusions.Specific concerns and errors include:• The authors did not report the dates of inclusion for the literature search, and they did not specify whether language exclusions were applied in the literature search.• Reasons for exclusion listed in the flow diagram are vague, presenting a concern about reproducibility.• Holmes et al. (2013) is a population-based retrospective cohort study assessing association between medications and survival, but did not assess cancer development or risk.Thus, it should not have been included in the current meta-analysis.

Abstract licence: CC BY

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