RT Journal Article SR Electronic T1 Authors' response JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 661 OP 662 DO 10.3399/bjgp11X606537 VO 61 IS 592 A1 Peter Vedsted A1 Frede Olesen YR 2011 UL http://bjgp.org/content/61/592/661.4.abstract AB