RT Journal Article SR Electronic T1 HUTCHISON'S CLINICAL METHODS. 17TH EDITION JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 253 OP 253 VO 31 IS 225 A1 Drummond, John YR 1981 UL http://bjgp.org/content/31/225/253.5.abstract AB