Retraction Note: Journal of Cardiothoracic Surgery (2020) 15:309 https://doi.org/10.1186/s13019-020-01355-0

The Editor-in-Chief has retracted this article due to the lack of adherence to the journal's ethical standards and editorial policy. After publication, concerns were raised regarding the trial registration and ethics approval of this study. The authors have provided the ethics approval, which was dated after the patient recruitment start date.

All authors agree to this retraction.