[Air pollution, bronchitis and emphysema in the Ruhr district (author's transl)].
D000397:Air Pollution; D001249:Asthma / Q000209:etiology; D001991:Bronchitis / Q000209:etiology*; D005860:Germany, West; D006801:Humans; D011656:Pulmonary Emphysema / Q000209:etiology*; D012905:Smog
D012905:Smog
Luftverschmutzung, Bronchitis, Emphysem: Ergebnisse im Ruhrgebiet