1. Department of Obstetrics and Gynaecology, University of Cambridge, United Kingdom
2. Centre for Trophoblast Research, University of Cambridge, United Kingdom
3. Department of Obstetrics and Gynecology, University of Texas Health Science Center
4. Division of Reproductive Sciences, Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus
5. Department of Epidemiology and Biostatistics, University of Texas Health Science Center
6. Department of Biochemistry, University of Texas Health Science Center
7. Department of Nutrition Sciences, University of Cincinnati
8. Department of Pediatrics, University of Colorado Anschutz Medical Campus