RT Journal Article SR Electronic T1 Giving patients choice of appointment length JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 159 OP 159 DO 10.3399/bjgp17X690197 VO 67 IS 657 A1 Rod Sampson YR 2017 UL http://bjgp.org/content/67/657/159.2.abstract AB