Houston, Texas.Investigation performed at The Methodist Hospital, Houston.*No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article. No funds were received in support of this study.(Goldberg, Maffet, Goodman) Barnhart Department of Orthopedic Surgery (B. A. G. and M. W. M.) and Department of Pathology (J. C. G.), Baylor College of Medicine, I Baylor Plaza, Houston, Texas 77030. E-mail address for Dr. Goldberg: firstname.lastname@example.org.