Balldin, Stina http://orcid.org/0000-0002-0812-0483
Bergström, Martin
Wirtberg, Ingegerd
Axberg, Ulf
Funding for this research was provided by:
Swedish National Institute of Public Health
Socialstyrelsen
Article History
First Online: 21 November 2018
Compliance with Ethical Standards
:
: The Central Ethical Review Board in Lund, Sweden, ethically approved the study (ref.nr. 2009/323).