RT Journal Article SR Electronic T1 Right Paratracheal Air Cyst (Tracheal Diverticulum) JF Respiratory Care FD American Association for Respiratory Care SP 1409 OP 1411 VO 54 IS 10 A1 Ziaollah Haghi A1 Mohammad Towhidi A1 Hossein Fattahi A1 Shahrzad M Lari YR 2009 UL http://rc.rcjournal.com/content/54/10/1409.abstract AB