1. Global burden of disease and risk factors;Lopez,2006
2. Neurological disorders: public health challenges;World Health Organization,2006
3. How much disease burden can be prevented by environmental interventions?;Prüss-Üstün;Epidemiology & Society,2007
4. Our common future;Brundtland Commission (World Commission on Environment Development),1987
5. Statistisches Bundesamt. Statistisches Jahrbuch 2006. Wiesbaden, 2006.