Funding for this research was provided by:
Oral reconstruction foundation (CF41.305)
Received: 2 April 2020
Accepted: 1 June 2020
First Online: 29 June 2020
Ethics approval and consent to participate
: All patient data were collected after approval of the Ethics Committee of Ulm University (Application No. 337/12 and 41/14). All participating patients signed consent forms.
: Not applicable.
: The authors declare that they have no competing interests.