Correction to: Head Face Med
https://doi.org/10.1186/s13005-019-0193-9
Anzeige
Following publication of the original article [1], the authors reported that the information regarding ethics approval was accidentally entered under trial registration. A trial registration was not required for this study.
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.