TY - JOUR T1 - Abstracts JF - British Journal of Industrial Medicine JO - Br J Ind Med SP - 65 LP - 68 DO - 10.1136/oem.10.1.65 VL - 10 IS - 1 A2 - , Y1 - 1953/01/01 UR - http://oem.bmj.com/content/10/1/65.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -