1. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Colorado Denver – Anschutz Medical Campus, Aurora, CO, USA;
2. Center for Health and Environmental Data, Colorado Department of Public Health and Environment, Denver, CO, USA;
3. Division of Personalized Medicine and Bioinformatics, Department of Medicine, University of Colorado Denver – Anschutz Medical Campus, Aurora, CO, USA;
4. Division of Reproductive Sciences, Department of Obstetrics and Gynecology, University of Colorado Denver – Anschutz Medical Campus, Aurora, CO, USA