Time trends in exposure to environmental tobacco smoke and parental educational level for 6-year-old children in Germany

Author: Prel Xianming   Krämer Ursula   Ranft Ulrich  

Publisher: Springer Publishing Company

ISSN: 0943-1853

Source: Zeitschrift fuer Gesundheitswissenschaften, Vol.14, Iss.5, 2006-10, pp. : 309-315

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