Funding for this research was provided by:
Received: 25 May 2018
Accepted: 25 September 2018
First Online: 15 October 2018
Change Date: 19 November 2018
Change Type: Correction
Change Details: Following publication of the original article , the author pointed out that the references were numbered incorrectly. This error was introduced during the production process. The original article has been corrected.
Ethics approval and consent to participate
: For this retrospective data analysis, ethical approval was obtained from the ethical committee of the Canton of Zurich, Switzerland. Written informed consent was obtained from all individual participants included in the study. Informed consent of minors was obtained by the legally authorized representative.
: Written informed consent for publication was obtained from all included patients. Informed consent of minors was obtained by the legally authorized representative.
: A.S, L.N., and P.F. are shareholders of a computer-assisted surgical planning application. The authors declare that they have no competing interests.
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