Kang Richard W, McGill Kevin C, Lin Johnny, Gitelis Steven
Department of Orthopaedic Surgery, Rush University Medical Center, 1611 West Harrison Street, #300, Chicago, IL 60612, USA.
Clin Orthop Relat Res. 2011 May;469(5):1517-21. doi: 10.1007/s11999-011-1851-9. Epub 2011 Mar 15.