RT Journal Article SR Electronic T1 Open-access echocardiography. JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 122 OP 122 VO 46 IS 403 A1 A S Clubb A1 M R Clubb YR 1996 UL http://bjgp.org/content/46/403/122.2.abstract AB