Nymo, S
Coutinho, SR
Eknes, PH
Vestbostad, I
Rehfeld, JF
Truby, H
Kulseng, B
Martins, C
Article History
Received: 23 August 2017
Revised: 23 April 2018
Accepted: 30 April 2018
First Online: 21 June 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.