Funding for this research was provided by:
The Local Research and Development Council Södra Älvsborg, Sweden (VGFOUSA-394101, VGFOUSA-489001, VGFOUSA-490101, VGFOUSA-602971)
The Local Research and Development Council Södra Älvsborg, Sweden (VGFOUSA-402971)
Article History
First Online: 12 October 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest.
: The study was approved in accordance with the ethical standards of the Research Ethics Committee of Gothenburg University (reg. no. 057-14) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
: The funding body had no role in design, collection, analyses, interpretation of data or in writing the manuscript.