1. AMA (2001) Principles of medical ethics. In: Code of medical ethics. American Medical Association, Chicago
2. APA (2000) Diagnostic and statistical manual of mental disorders DSM IV TR. American Psychiatric Association, Arlington
3. Arif A, Westermeyer J (1990) Methadone maintenance in the management of opioid dependence: an international review. Praeger, New York
4. Arosemena G (2013) Conflicts of rights in international human rights: a meta-rule analysis. Glob Const 2:6–36
5. Bergmark A (2008) Specific and contextual treatment mechanisms. Nordic Stud Alcohol Drugs 25:277–285