1. Childhood chronic illness: prevalence, severity, and impact;Newacheck;Am J Public Health,1992
2. Screening for asthma in children;Jones;Br J Gen Pract,1994
3. Asthma among minority children: a growing problem;Evans;Chest,1992
4. Ethnic differences in the prevalence of asthma in middle class children;Nelson;Ann All Asthma Immunol,1997
5. An estimate of the prevalence of asthma and wheezing among inner-city children;Crain;Pediatrics.,1994