RT Journal Article SR Electronic T1 OXFORD TEXTBOOK OF MEDICINE (2nd edition) JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 326 OP 326 VO 37 IS 300 A1 Buckley, E. Graham YR 1987 UL http://bjgp.org/content/37/300/326.4.abstract AB