Duration of breastfeeding and the risk of childhood asthma in children living in urban areas

MeSH terms

• Asthma / epidemiology*
• Asthma / immunology
• Breast Feeding*
• Child
• Child, Preschool
• Female
• Humans
• Immunity, Maternally-Acquired
• Male
• Portugal
• Prevalence
• Risk Factors
• Sex Factors*
• Socioeconomic Factors
• Time Factors*
• Urban Population*