Hinriksdottir, H H
Jonsdottir, V L
Sveinsdottir, K
Martinsdottir, E
Ramel, A
Article History
Received: 4 April 2014
Revised: 10 September 2014
Accepted: 12 October 2014
First Online: 19 November 2014
Competing interests
: The authors declare no conflict of interest.