1. Department of Cardiovascular Medicine (V.N., F.F., M.P., J.L., Y.X., E.L., A.L.), Mayo Clinic, Rochester, MN.
2. Department of Laboratory of Medicine and Pathology (E.M.F., M.P.A., M.C.B., R.J.S.), Mayo Clinic, Rochester, MN.
3. Department of Neurosurgery (F.B.M., G.L.), Mayo Clinic, Rochester, MN.
4. Department of Nephrology and Hypertension (L.O.L.), Mayo Clinic, Rochester, MN.