Urban factor and prevalence of respiratory symptoms and "angina ectoris". A study on 9,168 twin pairs with the aid of mailed questionnaires.

Authors :: Cederlöf R
Source :: Archives of environmental health [Arch Environ Health] 1966 Dec; Vol. 13 (6), pp. 743-8.
Publication Year :: 1966

Subjects :: Adult
Aged
Environment
Female
Humans
Male
Middle Aged
Sampling Studies
Sweden
Angina Pectoris epidemiology
Bronchitis epidemiology
Cough epidemiology
Diseases in Twins epidemiology
Smoking

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