Asthma and rhinitis prevalence and co-morbidity in 13-14-year-old schoolchildren in the city of Fortaleza, Ceará State, Brazil

Luna M de FG de, Almeida PC de, Silva MGC da. Asthma and rhinitis prevalence and co-morbidity in 13-14-year-old schoolchildren in the city of Fortaleza, Ceará State, Brazil. Cad Saude Publica. 2011; 27(1): 103-12.