RT Journal Article SR Electronic T1 Soft-tissue images. Mediastinal goitre JF Canadian Journal of Surgery JO CAN J SURG FD Canadian Medical Association SP 250 OP 251 VO 43 IS 4 A1 John D. Urschel A1 Timothy M. Anderson YR 2000 UL http://canjsurg.ca/content/43/4/250.abstract