Lundar, Tryggve http://orcid.org/0000-0001-5772-8965
Due-Tønnessen, Bernt Johan
Frič, Radek
Brandal, Petter
Stensvold, Einar
Due-Tønnessen, Paulina
Article History
Received: 12 June 2019
Accepted: 9 July 2019
First Online: 15 July 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: For this type of study, formal consent is not required.