Pask, Sophie, Pinto, Cathryn, Bristowe, Katherine, van Vliet, Liesbeth, Nicholson, Caroline, Evans, Catherine J., George, Rob, Bailey, Katharine, Davies, Joanna M., Guo, Ping, Daveson, Barbara A., Higginson, Irene J., Murtagh, Fliss E.M., "A framework for complexity in palliative care: A qualitative study with patients, family carers and professionals", Palliative Medicine, 2018