From St. Elizabeth Health Center (C.M.D.), Youngstown, University of Cincinnati (F.A.L.), Cincinnati, and Grant Medical Center (R.O.), Columbus, Ohio; Carolinas Medical Center (M.J.B.), Charlotte, and New Hanover Regional Medical Center (T.V.C.), Wilmington, North Carolina; Eastern Virginia Medical Center (F.J.C.), Norfolk, Virginia, Bridgeport Hospital (M.J.M.C.), Bridgeport, Connecticut, Blanchfield Army Community Hospital (T.K.), Fort Campbell, Kentucky, Bronson Methodist Hospital (B.P.), Kalamazoo, Michigan, and Jacobi Medical Center (R.J.S.), Bronx, New York.