Prevalence of asthma and rhinitis in 13 year old adolescents in Porto, Portugal.


BACKGROUND The prevalence of asthma and rhinitis has been increasing over the past few decades, but the last few years have seen these rates stabilise or even decrease. AIM The aim of our study was to describe the prevalence of rhinitis, asthma or asthma-like symptoms in 13 year-old urban adolescents. METHODS Eligible participants were all students at… (More)


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