RT Journal Article SR Electronic T1 Letters JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 127 OP 127 VO 38 IS 308 A1 T.C. O'Dowd A1 A.D. Wilson YR 1988 UL http://bjgp.org/content/38/308/127.1.abstract AB