1. School of Pharmacy, Faculty of Medical Sciences; Newcastle University; Newcastle upon Tyne UK
2. Department of Internal Medicine; University of Nevada, Reno School of Medicine; Reno NV USA
3. Wolfson Research Institute for Health and Wellbeing; Durham University; Durham UK
4. Department of Palliative Medicine; Royal Victoria Infirmary; Newcastle upon Tyne UK
5. University of Texas MD Anderson Cancer Center; Houston TX USA
6. Division of Geriatric and Palliative Medicine; The University of Texas Health Science Center at Houston; Houston TX USA