Johansen, Christoffer
Schüz, Joachim
Andreasen, Anne-Marie Serena
Dalton, Susanne Oksbjerg
Article History
Received: 22 March 2016
Revised: 30 January 2017
Accepted: 2 February 2017
First Online: 7 March 2017
Competing interests
: The authors declare no conflict of interest.