1. Valentin A, Capuzzo M, Guidet B, Moreno R, Metnitz B, Bauer P, et al. Errors in administration of parenteral drugs in intensive care units: multinational prospective study. BMJ. 2009;338:b814.
2. The Best Medicine: The management of medicines in acute and specialist trusts. Commission for healthcare audit and inspection report, 2007. Available from the World-Wide-Web. http://www.cqc.org.uk/_db/_documents/The_Best_Medicine_acute_trust_tagged.pdf .
3. Allied health professionals and health care scientists. Critical care staffing guidance: Department of Health, 2003. Available from the World-Wide-Web. www.ukcpa.org/ukcpadocuments/2.pdf .
4. Adult critical care: Specialist pharmacy practice: Department of Health, 2005. Available from the World-Wide-Web. http://www.dh.gov.uk/prod_consum_dh/groups/dh_digitalassets/@dh/@en/documents/digitalasset/dh_4114093.pdf .
5. Dean BS, Barber ND. A validated, reliable method of scoring the severity of medication errors. Am J Health Syst Pharm. 1999;56:57–62.