1. Department of Surgery, University of Pennsylvania Perelman School of Medicine, Philadelphia
2. Department of Computer and Information Science, University of Pennsylvania School of Engineering and Applied Science, Philadelphia
3. Centro de Cirugía Experimental y Simulación, Pontifica Universidad Católica, Santiago, Chile
4. Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill
5. Statistical Editor, JAMA Surgery