The prevalence of asthma-related symptoms in 13-14-year-old children from 9 Spanish populations. The Spanish Group of the ISAAC Study (International Study of Asthma and Allergies in Childhood)
Prevalencia de síntomas relacionados con el asma en niños de 13-14 años de 9 poblaciones españolas. Grupo Español del Estudio ISAAC (International Study of Asthma and Allergies in Childhood)