Funding for this research was provided by:
Research fund of County Council of Västerbotten (7002408)
Faculty of Medicine, Umeå University
Article History
Received: 22 January 2019
Accepted: 12 December 2019
First Online: 30 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Informed consent was obtained from all donors and/or their legal guardians that are included in the present study.
: All procedures performed in studies involving human participants were in accordance with the 1964 Helsinki declaration and were approved by the local ethics committee for research at Umeå University (Dnr 2013-276-31M), and all methods were performed in accordance with the relevant guidelines and regulations of the local ethics committee.