1. Wake County Emergency Medical Services, Raleigh, North Carolina, and University of North Carolina at Chapel Hill, Chapel Hill, North Carolina (J.G.W., M.W.B., J.G.C., J.B.M.)
2. Wake County Emergency Medical Services, Raleigh, North Carolina (M.D.L., B.B.C.)
3. Dell Medical School at The University of Texas at Austin, Austin, Texas, and Mount Isa Centre for Rural and Remote Health, James Cook University, Townsville, Queensland, Australia (L.H.B.)
4. Brody School of Medicine at East Carolina University, Greenville, North Carolina (A.W.J.)
5. Doctors Making Housecalls, Durham, North Carolina (A.K.K.)