RT Journal Article SR Electronic T1 Mature cystic teratoma in the posterior mediastinum JF Canadian Journal of Surgery JO CAN J SURG FD Canadian Medical Association SP E73 OP E74 VO 52 IS 3 A1 Sho Ogata A1 Yasushi Okusa A1 Toshiya Ogawa A1 Tomomichi Ogawa A1 Kimitoshi Inoue A1 Yuichi Ozeki YR 2009 UL http://canjsurg.ca/content/52/3/E73.abstract