Affiliation: | I.D. Conacher, MRCP, FFARCS, Consultant, M.L. Paes, FFARCS, Consultant, L. Jacobson, FF ARCS, Senior Registrar, P.D. Phillips, BSc, FFARCS, Registrar, D.W. Heaviside, FFARCS, Consultant, Regional Cardiothoracic Centre, Freeman Hospital, High Heaton, Newcastle upon Tyne NE7 7DN. |