Health statistics from U.S. national health survey series. B-18. Acute conditions, incidence and associated disability, United States, July 1958-June 1959, statistics on incidence of acute conditions and number of associated restricted-activity days, bed-days, work-loss days, and school-loss days according to condition group, based on data collected in household interviews during period July 1958-June 1959; [prepared by Robert R. Fuchsberg].

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