TY - JOUR T1 - The Principles and Practice of Medicine JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 590 LP - 590 VL - 23 IS - 133 A2 - , Y1 - 1973/08/01 UR - http://bjgp.org/content/23/133/590.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -