1. Campbell University School of Osteopathic Medicine, Leon Levine Hall of Medical Sciences , Lillington, NC 27546, USA
2. College of Medicine, Rocky Vista University College of Osteopathic Medicine , Parker, CO 80134, USA
3. Department of Anesthesiology and Critical Care Medicine, University of New Mexico , Albuquerque, NM 87106, USA
4. Department of Medicine - Division of Hospital Medicine, University of California San Francisco , San Francisco, CA 94143, USA
5. Department of Emergency Medicine, Lab of Computer Science, Massachusetts General Hospital, Harvard Medical School , Boston, MA 02114, USA