1. From the Department of Emergency Medicine, Hennepin County Medical Center, Minneapolis (S.J., S.S., L.C., C.W., J.H., C.R., R.P., D.P., R.R.); the Department of Emergency Medicine, West Suburban Medical Center, Oak Park, IL (L.O.); the College of Human Medicine, Michigan State University, East Lansing (B.D.); and the Department of Emergency Medicine, Women and Children's Hospital of Buffalo, Buffalo, NY (K.C.).