TY - JOUR T1 - Correction JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 333 LP - 333 VL - 37 IS - 300 A2 - , Y1 - 1987/07/01 UR - http://bjgp.org/content/37/300/333.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -