1. The Johns Hopkins Center for Fetal Therapy, Department of Gynecology & Obstetrics; Johns Hopkins School of Medicine, 600 North Wolfe Street, Nelson 228; Baltimore MD 21287 USA
2. Department of Neurosurgery; Johns Hopkins School of Medicine; Baltimore MD USA
3. Department of Art as Applied to Medicine; Johns Hopkins School of Medicine; Baltimore MD USA
4. Medical Modeling & Simulation Innovation Center; Telemedicine and Advanced Technology Research Center, United States Army Medical Research and Materiel Command; Fort Detrick, MD USA