Decline of ambient air pollution and respiratory symptoms in children

J Heinrich1, B Hoelscher, H E Wichmann

  • 1Forschungszentrum für Umwelt und Gesundheit, Institut fuer Epidemiologie, and Lehrstuhl für Epidemiologie, Ludwig-Maximilians Universitaet München, Neuherberg, Germany. Joachim.Heinrich@gsf.de

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