1
Published 2016
OECD Publishing

2
Published 2015
OECD Publishing

3
Published 2013
OECD Publishing

5
Published 2015
OECD Publishing

6
Published 2017
OECD Publishing

8
Published 2012
Federal Office of Public Health

9
Published 2014
OECD Publishing

10
Published 2017
OECD Publishing

11
Published 2013
OECD Publishing

14
Published 2014
Federal Office for Social Security

15
Published 2012
OECD Publishing

16
Published 2017
OECD Publishing

17
Published 2000
OECD Publishing

18
Published 2007
Bundesministerium für Bildung und Forschung

20
Published 2006
Federal Office of Public Health