Health statistics from U.S. national health survey, series. B-12. Chronic respiratory conditions reported in interviews, United States July 1957-June 1958, statistics on prevalence of chronic respiratory conditions and associated disability by age, sex, medical attention, and type of condition, based on data collected in household interviews during July 1957-June 1958; [with list of references; prepared by Geraldine A. Gleeson].

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