1. Department of Computer Science, School of Engineering and Applied Science, Institute for Computer Graphics The George Washington University 800 22nd Street NW Suite 3400, Washington DC 20052 USA
2. Department of Epidemiology and Biostatistics, Milken Institute School of Public Health The George Washington University 800 22nd Street NW Suite 7680, Washington DC 20052 USA
3. Department of Computer Science, School of Engineering and Applied Science, and Department of Pediatrics, School of Medicine and Health Sciences, Institute for Computer Graphics The George Washington University 800 22nd Street NW Suite 5830, Washington DC 20052 USA