AU - Staals, Eric L. AU - Bacchini, Patrizia AU - Mercuri, Mario AU - Bertoni, Franco TI - Dedifferentiated Chondrosarcomas Arising in Preexisting Osteochondromas PT - JOUR DP - 2007 TA - The Journal of Bone & Joint Surgery PG - 987-993 VI - 89 IP - 5 AID - 10.2106/JBJS.F.00288 [doi] 4100 - http://dx.doi.org/10.2106/JBJS.F.00288 SO - The Journal of Bone & Joint Surgery May 1, 2007 89(5):987