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Blood pressure levels and hypertension in persons ages 6-74 years, United States, 1976-80

Rowland, Michael, 1945-
[Hyattsville, Md.] : [U.S. Dept. of Health and Human Services, Public Health Service, National Center for Health Statistics], [1982] 1982

Drug utilization in office visits to primary care physicians : National Ambulatory Medical Care Surv

Cypress, Beulah K.
[Hyattsville, Md.] : [U.S. Dept. of Health and Human Services, Public Health Service, National Center for Health Statistics], [1982] 1982