tailieunhanh - Asthma incidence and risk factors in a national longitudinal sample of adolescent Canadians: A prospective cohort study

Estimates of asthma incidence and its possible determinants in adolescent populations have rarely been obtained using prospective designs. We sought to identify socio-demographic and other patterns in the incidence of asthma among Canadian adolescents and to examine possible behavioural and environmental determinants of asthma incidence using longitudinal analyses. |

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