From the Department of Medicine, University of Melbourne, Austin and Repatriation Medical Centre (Repatriation Campus) (C.T., J.M.F., W.C.B., L.M.B., J.R., M.E.C.), Heidelberg West, Victoria; and Baker Medical Research Institute (C.T., C.I.J., J.M.F., W.C.B., M.E.C.), Melbourne, Australia. (At 2003-03)