Erol B, Segal L, Huff D, States L, Dormans J P
Department of Orthopaedic Surgery, The Children's Hospital of Philadelphia, 34th & Civic Center Boulevard, Philadelphia, PA 19104-4399, USA.
Clin Orthop Relat Res. 2003 Aug(413):323-31. doi: 10.1097/01.blo.0000081205.51121.a2.