Sanchez Leon D, Ban Kevin M, Bramwell Kenny, Davis Daniel, Wolfe Richard, Rosen Peter
Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, One Deaconess Road, West CC2, Boston, MA 02215, USA.
Intern Emerg Med. 2006;1(4):305-9. doi: 10.1007/BF02934766.