Lissner, L
Wijnhoven, T M A
Mehlig, K
Sjöberg, A
Kunesova, M
Yngve, A
Petrauskiene, A
Duleva, V
Rito, A I
Breda, J
Article History
Received: 20 April 2015
Revised: 17 November 2015
Accepted: 9 December 2015
First Online: 2 February 2016
Competing interests
: The authors declare no conflict of interest.