Risk  factors and prevalence of asthma and rhinitis among primary school children in  Lisbon
          Pegas, Priscila; Alves, Célia A.; Scotto, Manuel; Evtyugina, Margarita; Pio, Casimiro A.; Freitas, Maria do Carmo  
          
          Portuguese Journal of  Pulmonology, 17 (2011), 109-116  
          http://www.elsevier.pt/en/revistas/-320/artigo/factores-risco-e-prevalencia-asma-e-rinite-em-90020260  
           
            
         |