1. Increased hospitalizations for asthma among children in the Washington, D.C. area during 1961-1981;Mullally;Annals Allergy,1984
2. Vital and health statistics,1981
3. National Center for Health Statistics. Mortality (annual), Vital statistics of the United States, volume 2
4. Annual summary of births, deaths, marriages, and divorces: United States, 1983;Monthly Vital Statistics Report 1984,1984
5. Advance report of final mortality statistics, 1982;Monthly Vital Statistics Report 1984,1984