Empicially assess the impact of infertility treatment, including but not limited to ovulationinduction and assisted reproductive technologies (ART), on threee global domains ofchildren's health- growth, motor and social development - from birth through three yearsof age for a geographically and temporally defined birth cohort of children.Developmental status of children is broadly defined to include the moajor and minornuerodeveloopmental impairtments and physcial growth patterns and proportionality(weight-for-height.)
