References
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- Ross , W. D. 1930 . Foundations of Ethics. , Oxford : OUP. .
- Dworkin , R. 1984 . “ Rights as trumps. ” . In Theories of Rights , Edited by: Waldron , J . Oxford : OUP .
- Secretaries of State for Health. Northern Ircland and Wales. 1989 . Working for Patients , HMSO .