RT Journal Article SR Electronic T1 Changing patterns of consultation in general practice: fourth national morbidity study, 1991-1992. JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 283 OP 285 VO 45 IS 395 A1 S Ebrahim YR 1995 UL http://bjgp.org/content/45/395/283.abstract AB