Hadler-Olsen, Elin
Wirsing, Anna Maria
Article History
Received: 11 May 2018
Revised: 1 February 2019
Accepted: 1 February 2019
First Online: 27 February 2019
Competing interests
: The authors declare no competing interests.
: All data reported in this manuscript are found in the literature as cited in the text.
: This systematic review summarises previously published data and does not include new human data or tissue that require ethical approval and consent. The authors assume that the studies reviewed were conducted after ethical approval and consent, and in accordance with the Declaration of Helsinki.
: The study was supported by funding from the University of Tromsø – the Arctic University of Norway.