Fahrman, Birgit http://orcid.org/0000-0002-3957-1914
Norström, Per http://orcid.org/0000-0002-7778-2552
Gumaelius, Lena http://orcid.org/0000-0002-4115-6584
Skogh, Inga-Britt http://orcid.org/0000-0003-3973-3466
Article History
Accepted: 3 January 2019
First Online: 24 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.