TY - JOUR T1 - Short Reviews JF - Journal of Epidemiology and Community Health JO - J Epidemiol Community Health SP - 79 LP - 79 DO - 10.1136/jech.47.1.79-a VL - 47 IS - 1 AU - F G R Fowkes Y1 - 1993/02/01 UR - http://jech.bmj.com/content/47/1/79.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -