Zwahlen, Roger A.
Tang, Alexander T. H.
Leung, Wai Keung
Tan, Su Keng http://orcid.org/0000-0002-4346-3027
Article History
Received: 25 July 2022
Accepted: 26 August 2022
First Online: 7 September 2022
Declarations
:
: The ethical approval for this study was granted by the local authority (Institutional Review Board no.: UW 12–066). The study was conducted at the Prince Philip Dental Hospital, The University of Hong Kong. Prior written informed consent was obtained from all the model volunteers and judges.
: Consent for publication of photograph was obtained from all photograph models.
: The authors declare that they have no competing interests.