de Sousa, Mirta Mittelstedt Leal
Bjørås, Karine Øian
Hanssen-Bauer, Audun
Solvang-Garten, Karin
Otterlei, Marit
Article History
Received: 13 February 2017
Accepted: 16 June 2017
First Online: 24 July 2017
Competing Interests
: The authors declare that they have no competing interests.