- Correspondence to Dr Stephanie Sivell, Marie Curie Palliative Care Research Centre, Institute of Cancer and Genetics, Cardiff University School of Medicine, Neuadd Meirionnydd, Heath Park, Cardiff CF14 4YS, UK;
- Received September 23, 2014
- Revision received February 19, 2015
- Accepted March 11, 2015
- First published May 19, 2015.
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- Data supplement 1 - Online supplement
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