Influence of breast-feeding on the infant's intellectual development.

The objective of this study was to analyze the effects of breast-feeding on the intellectual development of the infant, controlling for possible confounding factors. A prospective study of cohorts was carried out in a group of 229 healthy infants, studied from birth to 2 years of age. The infants were divided into two groups: group 1, 99 infants who were bottle-fed; and group 0, 130 who were breast-fed.

[Pediatric-social aspects of the acute and chronic viral types of hepatitis in childhood].

This study analyzes the sanitary, sociofamiliar, cultural and economic aspects of children who have been diagnosed of acute and chronic viral hepatitis. Retrospective data was collected of 249 children. A questionnaire was given to the parents and the information collected was processed in a computer.