Correction to: Prog Orthod (2019) 20:25

https://doi.org/10.1186/s40510-019-0282-0

In the publication of this article [1], there are errors in the Methods (Subjects) and Ethics approval and consent to participate section.

The error:

“This retrospective study was approved by the Institutional Review Board of XXXXX XXX University Medical Center (IRB No: K-2013-11018794). Skeletal Class III patients who had received bilateral sagittal split ramus osteotomy only by the same surgeon at the XXXXX XXX University Dental Hospital had been screened.”

Should instead read:

“This retrospective study was approved by the Institutional Review Board of Kyung Hee University Medical Center (IRB No: K-2013-11018794). Skeletal Class III patients who had received bilateral sagittal split ramus osteotomy only by the same surgeon at the Kyung Hee University Dental Hospital had been screened.”

The error:

“This retrospective study was approved by the Institutional Review Board of XXXXX XXX University Medical Center (IRB No: K-2013-11018794).”

Should instead read:

“This retrospective study was approved by the Institutional Review Board of Kyung Hee University Medical Center (IRB No: K-2013-11018794).”

This has now been updated in the original article [1].