RT Journal Article SR Electronic T1 Direct access echocardiography to a district general hospital: are patients being screened appropriately? JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP s12 OP s12 DO 10.7861/clinmedicine.15-3-s12 VO 15 IS Suppl 3 A1 Matthew Burton A1 Sheila Jen A1 Allan Harkness YR 2015 UL http://www.rcpjournals.org/content/15/Suppl_3/s12.abstract