Asthma prevalence and risk factors in school children: The RESPIR longitudinal study Julia Alfonso; Santiago Pérez; Ricardo Bou; Ana Amat; Irene Ruiz; Amparo Mora; Silvia Escolano; Laura Chofre;

Risk factors for asthma in schoolchildren in Southern Brazil Arnaldo Carlos Porto Neto; Dirceu Solé; Vânia Hirakata; Luiza Salvador Schmid; Caroline Klock; Sérgio Saldanha Menna Barreto;

The relationship between second-hand smoke and wheezing in infants from Córdoba, Argentina A. Teijeiro; M.N. Cuello; M.G. Raiden; R.E. Vieyra; D. Solé; P. Ellwood; R.M. Gomez;