TY - JOUR T1 - Letters JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 132 LP - 132 VL - 37 IS - 296 AU - Roger Jones AU - John Bain Y1 - 1987/03/01 UR - http://bjgp.org/content/37/296/132.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -