1. From the Christchurch Cardioendocrine Research Group, University of Otago, Christchurch (M.S., V.A.C., T.G.Y., M.G.N., A.M.R., C.J.P.); Centre for Protein Research, Department of Biochemistry, University of Otago, Dunedin (T.K.); and Green Lane Cardiovascular Service, Auckland City Hospital, Auckland (P.R.), New Zealand.