Possible explanation for the different trends of asthma and allergy in East and West Germany.
Wichmann
H E
HE
GSF-Forschungszentrum, Neuherberg, München, Germany.
D001249:Asthma / Q000453:epidemiology*; D005859:Germany, East / Q000453:epidemiology; D005860:Germany, West / Q000453:epidemiology; D006801:Humans; D006967:Hypersensitivity / Q000453:epidemiology*; D006969:Hypersensitivity, Immediate / Q000453:epidemiology