TY - JOUR T1 - PREVENTION JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 313 LP - 313 VL - 31 IS - 226 AU - G. L. McCulloch Y1 - 1981/05/01 UR - http://bjgp.org/content/31/226/313.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -