PT - JOURNAL ARTICLE AU - Macdonald, John C. AU - Tien, Homer C.N. TI - Emergency battlefield cricothyrotomy AID - 10.1503/cmaj.080036 DP - 2008 Apr 22 TA - Canadian Medical Association Journal PG - 1133--1135 VI - 178 IP - 9 4099 - http://www.cmaj.ca/content/178/9/1133.short 4100 - http://www.cmaj.ca/content/178/9/1133.full SO - CMAJ2008 Apr 22; 178