TY - JOUR JF - Journal of the Royal Army Medical Corps JO - J R Army Med Corps SP - 117 LP - 119 DO - 10.1136/jramc-128-02-09 VL - 128 IS - 2 AU - John Boyd Y1 - 1982/04/01 UR - http://militaryhealth.bmj.com/content/128/2/117.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -