Prevalence and risk factors associated with allergic sensitization, rhinitis and eczema among children: comparison of two birth cohorts from different cities in Brazil - Figueiredo, E. A.; Bettiol, Heloisa; Gutierrez, M. R.; Cardoso, V. C.; Batista, Reinaldo Fernando; Barbieri, Marco Antonio; Silva, A. A. M.; Arruda, Luisa Karla de Paula; Ferriani, Virgínia Paes Leme (EAACI - WAO World Allergy and Asthma Congress, 2013)