RT Journal Article SR Electronic T1 Pharyngeal perforation caused by blunt trauma to the neck JF Canadian Journal of Surgery JO CAN J SURG FD Canadian Medical Association SP 57 OP 58 VO 46 IS 1 A1 Abdulrahman Hagr A1 Dhafer Kamal A1 Roger Tabah YR 2003 UL http://canjsurg.ca/content/46/1/57.abstract