Mohamed Omer S, Krishna SM, Li J, et al. The efficacy of extraembryonic stem cells in improving blood flow within animal models of lower limb ischaemia. Heart 2016;102:69-74.

This article was amended after publication to correct an error in the assessment for publication bias. In the section 'Meta-analysis, sensitivity analyses and funnel plot' and in the supplementary material, ‘Begger’s funnel plot’ has been corrected to ‘funnel plot’.