Rajantie, Hanna
Kaukola, Leena
Snäll, Johanna
Roine, Risto
Sintonen, Harri
Thorén, Hanna
Funding for this research was provided by:
Paulon Säätiö
Helsingin ja Uudenmaan Sairaanhoitopiiri
Article History
Received: 14 April 2020
Accepted: 3 November 2020
First Online: 5 December 2020
Compliance with ethical standards
:
: Hanna Rajantie declares that she has no conflict of interest.Leena Kaukola declares that she has no conflict of interest.Johanna Snäll declares that she has no conflict of interest.Risto Roine declares that he has no conflict of interest.Harri Sintonen declares that he is the developer of the 15D and obtains royalties from its electronic versions.Hanna Thorén declares that she has no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study protocol was approved by the Ethics Committee of the Helsinki University Hospital and the Internal Review Board of the Head and Neck Center, Helsinki University Hospital (Dno 33/E6/06).
: Informed consent was obtained from all individual participants included in the study.
: Written informed consent was obtained from all participants.
: Written informed consent was obtained from all participants.
: Not applicable.