[1] Department of Emergency Medicine, Eastr Carolina University, School of Medicine, Greenville, NC
[2] Division of Emergency Medicine, Department of Medicine, University of Massachusetts, Worcester, MA
[3] Kent Co. Emergency Medical Services, Department of Emergency Medicine, Butterworth Hospital, Grand Rapids, Ml
[4] Berkshire Medical Center, Pittsfield, MA
[5] Department of Emergency Medicine, State Univ. of New York at Syracuse, Syracuse, NY
[6] Department of Emergency Medicine, East Carolina University, School of Medicine, Greenville