Asthma surveillance in the United States. A review of current trends and knowledge gaps.
Weiss
K B
KB
Department of Health Care Sciences, George Washington University Medical Center, Washington, DC 20037.
Wagener
D K
DK
D001249:Asthma / Q000453:epidemiology*; D006306:Health Surveys; D006801:Humans; D009784:Occupational Diseases / Q000453:epidemiology; D011159:Population Surveillance; D014481:United States / Q000453:epidemiology