RT Journal Article SR Electronic T1 PRIMARY CARE JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 251 OP 251 VO 31 IS 225 A1 V. W. M. Drury YR 1981 UL http://bjgp.org/content/31/225/251.3.abstract AB