1. From the Center for Intelligent Imaging and Musculoskeletal and Quantitative Imaging Research Group, Department of Radiology and Biomedical Imaging (B.A., I.F., N.K.N., R.S., U.B., T.M.L., M.D.B., V.P., S.M.), and Center of Digital Health Innovation (V.P., S.M.), University of California–San Francisco, 1700 Fourth St, Suite 201, QB3 Building, San Francisco, CA 94107.