Association of self-reported asthma symptoms and allergic rhinoconjunctivitis with truck traffic frequency and environmental tobacco smoke exposure among preschool children in Gauteng townships, South Africa
This study aimed to investigate the association between self-reported asthma symptoms, allergic rhinoconjunctivitis, truck traffic frequency, and environmental tobacco smoke exposure among preschool children in Gauteng townships, South Africa. This cross-sectional study was conducted in 42 randomly selected preschools...