From the Division of Cardiovascular Diseases, Department of Medicine, Mayo Clinic, Rochester, MN (N.M.F., L.C., P.M.B., R.P.F., P.A.P., J.K.O., G.C.K.); and Ultrasound Department, China-Japan Union Hospital of Jilin University, Jilin, China (L.C.). (At 2013-09)
