TY - JOUR T1 - Textbook of Clinical Occupational and Environmental Medicine JF - Occupational and Environmental Medicine JO - Occup Environ Med SP - 559 LP - 560 DO - 10.1136/oem.52.8.559-a VL - 52 IS - 8 AU - P G Blain Y1 - 1995/08/01 UR - http://oem.bmj.com/content/52/8/559.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -