Predictors of Asthma and Persistent Wheeze in a National Sample of Children in the United States: Association with Social Class, Perinatal Events, and Race.
Schwartz, Joel; Gold, Diane; Dockery, Douglas W.; Weiss, Scott T.; Speizer, Frank E.
American Journal of Respiratory & Critical Care Medicine.
142(3):555-562, September 1990.
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