(c)
The  Author  2017.  Published  by  Oxford  University  Press  on  behalf  of  the  European  Public  Health  Association.
This  is  an  Open  Access  article  distributed  under  the  terms  of  the  Creative  Commons  Attribution  Non-Commercial  License
(http://creativecommons.org/licenses/by-nc/4.0/),  which  permits  non-commercial  re-use,  distribution,  and  reproduction  in  any  medium,
provided  the  original  work  is  properly  cited.  For  commercial  re-use,  please  contact  journals.permissions@oup.com
Med mindre annet er angitt, så er denne innførselen lisensiert som (c) The Author 2017. Published by Oxford University Press on behalf of the European Public Health Association. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com