TY - JOUR T1 - Letters JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 368 LP - 368 VL - 37 IS - 301 AU - Tony Waterston AU - T. Van Zwanenberg Y1 - 1987/08/01 UR - http://bjgp.org/content/37/301/368.4.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -