Funding for this research was provided by:
The Medical Council of Southeast Sweden (FORSS-232891)
Article History
Received: 18 January 2017
Accepted: 18 April 2017
First Online: 28 April 2017
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study was approved by the Regional Ethical Committee, Linköping, Sweden.
: Informed consent was obtained from all individual participants included in the study.