Duke University Medical Center (S.D.B., C.B.G., K.S.P., K.L.L., R.M.C.), Durham, NC; University of Massachusetts Medical School (J.M.G.), Worcester; Thoraxcenter Erasmus Universiteit (M.S.), Rotterdam, Netherlands; the University of Alberta (P.W.A.), Edmonton, Alberta, Canada; and The Cleveland (Ohio) Clinic Foundation (E.J.T.). (1997-06-03時点)