Eight years later in 1973, Japanese doctors advised mothers to avoid «prolonged extension of the hip and knee of infants during early postnatal life». (boba.com)
However, there was no significant evidence of an association between early postnatal life (during the first year of life), recent and current exposures to outdoor air pollutants with lung function at preschool age. (sciencedaily.com)
The functional organization of the cerebral cortex is modified dramatically by sensory experience during early postnatal life. (science.sciencemag.org)