Do girls and boys differ before birth? Seeking pregnant women for a study

We are seeking pregnant women who plan to deliver at Johns Hopkins Hospital to participate in a longitudinal research study from late pregnancy until your baby is 6 months of age. The first visit will occur between 35 and 38 weeks of pregnancy. After your baby is born, additional visits will occur when your baby is 3 and 6 months old. The study includes noninvasive monitoring of fetal heart rate and movement, cord blood sampling at birth, saliva samples from you and your baby, and measures of your baby's behavior as an infant. There are no known risks of participation for you or your baby. Compensation will be provided.

If you are interested in participating, please contact the study's principal investigator, Dr. Kristin Voegtline, at or 410-614-3866 for more information.

JHM IRB00102567