Swan, Kristine Zøylner
Nielsen, Viveque Egsgaard
Godballe, Christian
Thrane, Jens Faunø
Mortensen, Marie Riis
Schytte, Sten
Pedersen, Henrik Baymler
Christiansen, Peer
Bonnema, Steen Joop
Article History
Received: 21 February 2018
Accepted: 14 May 2018
First Online: 31 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: For this type of study formal consent is not required.