Ohlsson, Lina
Hammarström, Marie-Louise
Lindmark, Gudrun
Hammarström, Sten
Sitohy, Basel
Article History
Received: 30 September 2015
Revised: 10 December 2015
Accepted: 16 December 2015
First Online: 18 February 2016
Competing interests
: The authors declare no conflict of interest.