1. Department of Obstetrics and Gynecology, Center for Medical Education Research and Scholarly Innovation, Office of Medical Education, University of Virginia School of Medicine, Charlottesville, Virginia, USA
2. Center for Medical Education Research and Scholarly Innovation, Office of Medical Education, University of Virginia School of Medicine, Charlottesville, Virginia, USA
3. Center for Medical Education Research and Scholarly Innovation, Office of Medical Education, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Virginia, USA