1. Ethical decision making in intensive care: a nurse's perspective;Bertolini;Intensive Crit Care Nurs,1994
2. British Medical Association Withholding and Withdrawing Life-prolonging Medical Treatment: Guidance for Decision Making. London: BMJ Books; 2001.
3. Grounded theory: objectivist and constructivist methods;Charmaz,2000
4. Guidelines for limitation of treatment for adults requiring intensive care;Cohen,2004
5. Research into practice;Crookes,1998