1. From the Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104 (E.F.C.); Sanford Health, Sioux Falls, SD (M.M.T.); Solis Mammography, Houston, Tex (C.R.P.); Sutter Health, Fremont, Calif (B.C.S.); Sutter Health, Palo Alto, Calif (S.Y.L.); Hologic, Marlborough, Mass (S.P., A.R.); OM1, Boston, Mass (Y.J., L.A.S.S., J.K.P.); and Department of Radiology, Advocate Caldwell Breast Center, Park Ridge, Ill (N.A.).