TY - JOUR T1 - 1980 YEARBOOK OF MEDICINE JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 252 LP - 252 VL - 31 IS - 225 AU - B. Bedford Y1 - 1981/04/01 UR - http://bjgp.org/content/31/225/252.4.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -