Unfortunately, the original version of this article [1] contained an error. The correct paragraph can be found below:
The calculation of number of patients was not correct. It was wrote the non-inferiority margin as 0.1 mm. But it was 0.19 mm in an original document. Non-inferiority margin in previous coronary intervention studies has been set between 0.1 ~ 0.2 mm. The 0.19 mm is not irrelevant in view of the current trial standard.
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Park S, Yoon C, Oh I, Suh J, Cho Y, Youn T, Choi D, Chae I. Comparison of a drug-eluting balloon first and then bare metal stent with a drug-eluting stent for treatment of de novo lesions: study protocol of a randomized controlled trial. Trials. 2013;14:38. doi:10.1186/1745-6215-14-38.
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The online version of the original article can be found under doi:10.1186/1745-6215-14-38.
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Park, SD., Yoon, CH., Oh, IY. et al. Erratum to: Comparison of a drug-eluting balloon first and then bare metal stent with a drug-eluting stent for treatment of de novo lesions: study protocol of a randomized controlled trial. Trials 18, 232 (2017). https://doi.org/10.1186/s13063-017-1793-y
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DOI: https://doi.org/10.1186/s13063-017-1793-y