RT Journal Article SR Electronic T1 Farm accidents involving power take-off devices. JF Journal of Accident & Emergency Medicine JO Arch Emerg Med FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 121 OP 124 DO 10.1136/emj.11.2.121 VO 11 IS 2 A1 Hyland-McGuire, P YR 1994 UL http://emj.bmj.com/content/11/2/121.abstract AB Primary prevention represents the optimum method of virtually abolishing the factors that lead to this injury scenario. Cooperative effort is required on the part of manufacturers, health education authorities and the user. The present situation is unsatisfactory.