TY - JOUR T1 - CORRECTIONS JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 712 LP - 712 VL - 24 IS - 147 A2 - , Y1 - 1974/10/01 UR - http://bjgp.org/content/24/147/712.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -