TY - JOUR T1 - Medical news JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 509 LP - 509 VL - 25 IS - 156 A2 - , Y1 - 1975/07/01 UR - http://bjgp.org/content/25/156/509.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -