RT Journal Article SR Electronic T1 Author's response JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 509 OP 509 DO 10.3399/bjgp08X319503 VO 58 IS 552 A1 Eleanor Brown YR 2008 UL http://bjgp.org/content/58/552/509.2.abstract AB