RT Journal Article SR Electronic T1 Richard Anthony Pereira Gray, TD, K.ST.J, MA, MB, B.CHIR, MRCGP JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 446 OP 446 VO 30 IS 216 YR 1980 UL http://bjgp.org/content/30/216/446.2.abstract AB