1. From the Department of Orthopaedics and Rehabilitation (C.M.D., C.T., K.D.A., K.E.Y., I.K.I., D.M.L., G.E.F., F.Y.L.), Department of Radiology and Biomedical Imaging (E.R.B.), and Yale Center for Analytical Sciences (F.L., I.L.), Yale University School of Medicine, 47 College St, New Haven, CT 06520.