Funding for this research was provided by:
Text and Data Mining valid from 2020-01-15
Received: 18 October 2019
Revised: 29 November 2019
Accepted: 18 December 2019
First Online: 15 January 2020
Compliance with ethical standards
: Subjects providing samples (dental plaque and saliva) gave informed consent to the study that was positively reviewed by the University Clinic of Freiburg ethics committee (DRKS ID no.: DRKS00011148).
: The authors declare that they have no conflict of interest.