Daugaard, I
Sanders, K J
Idica, A
Vittayarukskul, K
Hamdorf, M
Krog, J D
Chow, R
Jury, D
Hansen, L L
Hager, H
Lamy, P
Choi, C L
Agalliu, D
Zisoulis, D G
Pedersen, I M
Article History
Received: 20 January 2017
Revised: 15 May 2017
Accepted: 7 June 2017
First Online: 31 July 2017
Competing interests
: The authors declare no conflict of interest.