1. the Centre for Immunology (D.J.W., L.L.W., R.P.), Department of Cardiology (C.H.), Respiratory Function Laboratory (P.R.), and Cardiopulmonary Transplant Unit (P.S.M.), St. Vincent's Hospital, Darlinghurst, and the Department of Rheumatology (A.D.S.), St. George Hospital, Kogarah, Australia.