TY - JOUR T1 - Letters JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 172 LP - 172 VL - 39 IS - 321 AU - Martin Lev Y1 - 1989/04/01 UR - http://bjgp.org/content/39/321/172.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -