1. Department of Obstetrics and Gynecology, School of Medicine, West Virginia University, Morgantown, West Virginia.
2. Department of Biostatistics, School of Public Health, West Virginia University, Morgantown, West Virginia.
3. Department of Pediatrics, School of Medicine, West Virginia University, Morgantown, West Virginia.
4. Department of Medical Education, School of Medicine, West Virginia University, Morgantown, West Virginia.
5. Department of Occupational Medicine, School of Public Health, West Virginia University, Morgantown, West Virginia.
6. Department of Medical Education, Anesthesiology, Obstetrics and Gynecology, School of Medicine, West Virginia University, Morgantown, West Virginia.