1. From Dunedin School of Medicine (C.-K.W.), University of Otago, Dunedin, New Zealand; Division of Public Health and Psychosocial Studies (W.G.), Akoranga Campus, Auckland University of Technology, Auckland, New Zealand; Green Lane Cardiovascular Service (R.A.H.S., N.v.P., H.D.W.), Auckland City Hospital, Auckland, New Zealand; Department of Cardiology (J.K.F.), Liverpool Hospital, Liverpool, Australia; and Flinders Medical Centre (P.E.G.A.), Adelaide, Australia.