From Vanderbilt University Medical Center, Nashville, Tenn (M.S.W.); Brigham and Women’s Hospital, Boston, Mass (M.O.S.); Medtronic, Inc, Minneapolis, Minn (P.J.D., A.J.S., J.L.K.); St Joseph’s Hospital, Savannah, Ga (M.B.C.); Providence Hospital, Southfield, Mich (C.M.); and Park Nicollet Heart Center, St Louis Park, Minn (W.O.A.).(2001-08-14時点)