Fig 1. Flow chart of the recruitment process of pregnant women and follow up of their children.

Pregnant women were invited to participate in the study. During the follow-up period, phthalate metabolites present in maternal and children’s urine were measured. At 8 years of age, the presence of asthma and wheezing was assessed using the International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire.