1. Drugs and Crime Prevention Committee Inquiry into the misuse/abuse of benzodiazepines and other forms of pharmaceutical drugs in Victoria 2006
2. World Health Organisation WHO model list of essential medicines: 15th edition (March 2007) 2007 http://www.who.int/medicines/publications/essentialmedicines/en/index.html
3. American Academy of Pain Medicine and American Pain Soceity The use of opioids for the treatment of chronic pain: a consensus statement from the American Academy of Pain Medicine and the American Pain Society 1997
4. The European white paper on the use of opioids in chronic pain management;Beubler;J Pain Palliat Care Pharmacother,2006
5. The undertreatment of pain: scientific, clinical, cultural, and philosophical factors;Resnik;Med Health Care Philos,2001