Text and Data Mining valid from 2018-07-03
Received: 19 April 2018
Accepted: 21 June 2018
First Online: 3 July 2018
Ethics approval and consent to participate
: The present study was approved by the Ethical Review Board of the University Hospitals Leuven (S55619 ML9535, University Hospitals Leuven). Signed informed consents were obtained from participants.
: Not applicable.
: The authors declare that they have no competing interests in relation to the present work. Francesco Mangano is a Section Editor for BMC Oral Health.
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