When the children were 4 to 7 years old, the mother-child dyads were contacted again for a new assessment. Contact with the research participants was attempted via telephone contact, review of medical records from the hospitals where the children were born, search in online social networks, and ultimately home visits. Once the mothers were located, they were invited to visit the clinic, bringing along their children, on a given date. Whenever the mother reported not being able or failed to attend the appointment, the families were visited at their homes. At this occasion, the mothers were interviewed once again, and information was obtained on the duration of breastfeeding and infant feeding practices. Updated data on the mother, the child, and the family were also collected.