RT Journal Article SR Electronic T1 Heart age woes: unnecessarily testing JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 224 OP 224 DO 10.3399/bjgp18X695921 VO 68 IS 670 A1 Alexander Gilkes YR 2018 UL http://bjgp.org/content/68/670/224.1.abstract AB