Ckr023 1.5
The European Journal of Public Health Advance Access published April 7, 2011 European Journal of Public Health, 1–5ß The Author(s) 2011. 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 by-nc/2.5) which permits unrestricted non-commerc