Prevalence of asthma, rhinitis and eczema in 6 - 7 years old students from the western districts of São Paulo City, using the standardized questionnaire of the "International Study of Asthma and Allergies in Childhood" (ISAAC)-phase IIIB - Lima, Renata Gontijo; Pastorino, A. C.; Casagrande, R. R. D.; Sole, D.; Leone, Claudio; Jacob, C. M. A. (Clinics, 2007)