Guo, Ping, Dzingina, Mendwas, Firth, Alice M., Davies, Joanna M., Douiri, Abdel, O'Brien, Suzanne M., Pinto, Cathryn, Pask, Sophie, Higginson, Irene J., Eagar, Kathy, Murtagh, Fliss E.M., "Development and validation of a casemix classification to predict costs of specialist palliative care provision across inpatient hospice, hospital and community settings in the UK: a study protocol", BMJ Open, 2018