Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (ME 4798/1-1)
University of Sydney
Deutsch Gesellschaft für Kieferorthopädie
Medical Faculty of the University of Bonn
Text and Data Mining valid from 2018-04-05
Received: 25 October 2017
Accepted: 20 March 2018
First Online: 5 April 2018
Ethics approval and consent to participate
: Approval of the Ethics Committee of the University of Bonn was obtained (#117/15). All donors of the PDL cells or their parents gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interest.
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