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2. http://www.who.int/cancer/palliative/definition/en/
3. Center to Advance Palliative Care 2011 Public Opinion Research on Palliative Care. A Report Based on Research by Public Opinion Strategies http://www.capc.org/tools-for-palliative-care-programs/marketing/public-opinion-research/2011-public-opinion-research-on-palliative-care.pdf