Directive 2004/37/EC of the European Parliament and the Council of 29 April 2004 on the protection of workers from the risks related to exposure to carcinogens or mutagens at work (Sixth individual Directive within the meaning of Article 16(1) of Council Directive 89/391/EEC 2004 ). Available at: http://europa.eu/scadplus/leg/en/cha/c11137.htm Accessed February 2007.