Since the National Children’s Study began enrolling participants in late April 2009, we have made a lot of progress in enrollment, participant follow-up and data collection in Salt Lake County. We currently have over 120 participants enrolled in the National Children’s Study, and 23 babies have been born so far. We have conducted more than 65 home visits with women in their 1st and 3rd trimesters and over 20 home visits with fathers. The 1st trimester home visit lasts approximately 3 hours and includes questionnaires, physical measures like height & weight, biologic sample collection, like blood & urine, and environmental sample collection, like dust & water from the home. Participants are compensated with $100 at the completion of this home visit for their time and effort. We have received very positive feedback from Study participants on the professionalism and sensitivity of the NCS staff members who are conducting the home visits. Staff members spent numerous hours preparing for these visits so that they would run smoothly and efficiently.