Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content + Download Section PDF ++ C. Keith Stone, MD ++ Professor and Chair ++ Department of Emergency Medicine ++ Texas A&M University Health Science Center ++ College of Medicine ++ Baylor Scott & White Healthcare ++ Central Texas Division ++ Temple, Texas ++ ++ Roger L. Humphries, MD ++ Professor and Chair ++ Department of Emergency Medicine ++ University of Kentucky College of Medicine ++ Lexington, Kentucky