- Correspondence to Dr Marius Steiro Fimland, NTNU, Fakultet for medisin og helsevitenskap, Institutt for samfunnsmedisin og sykepleie, Postboks 8905, MTFS, 7491 Trondheim, Norway;
- Received January 18, 2017
- Revised May 25, 2017
- Accepted June 3, 2017
- First published July 11, 2017.
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