Exercise challenge can assess the prevalence of asthma in the community and detect under-reporting of asthma in ethnic minorities.
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Changes in asthma prevalence: two surveys 15 years apart.
M L Burr, Barbara K. Butland, Shirley King et al. · Archives of Disease in Childhood · 1989 · 868 citations · Full text
Comparison of the prevalence of asthma among Asian and European children in Southampton.
Catherine D Pararajasingam, L Sittampalam, Pooja Damani et al. · Thorax · 1992 · 43 citations · Full text