TY - JOUR T1 - Tracheal calcification JF - Canadian Medical Association Journal JO - CMAJ SP - 291 LP - 291 DO - 10.1503/cmaj.070099 VL - 179 IS - 3 AU - Sang-Ho Jo, MD MMS AU - Young-Jin Choi, MD PhD AU - Goo-Yeong Cho, MD PhD AU - Hyun-Sook Kim, MD PhD AU - Ki-Suck Jung, MD PhD AU - Chong-Yun Rhim, MD PhD Y1 - 2008/07/29 UR - http://www.cmaj.ca/content/179/3/291.abstract ER -