King's College London

Funding Information: ICMJE uniform disclosure form (available at https://apm. amegroups.com/article/view/10.21037/apm-22-1326/coif). All authors are funded as part of the Children’s Palliative Care Outcome Scale project which is funded by the European Research Council’s Horizon 2020 programme (Grant ID: 772635) which was awarded to King’s College London with Richard Harding as principal investigator. HMS was also awarded a PhD studentship award (Award Number: NIHR-INF-2158) at King’s College London funded by the National Institute for Health and Care Research Allied Health Collaboration South London for a PhD that forms part of the Children’s Palliative Care Outcome Scale project. RH also reports funding in the last 36 months from the Medical Research Council, National Institute for Health Research, UKRI GCRF, Marie Curie, World Health organisation. And United States Cancer Pain Relief Committee, all awarded to King’s College London. RH also reports he is a member of the Advisory Council of the African Palliative Care Research Network, WHO Technical Working Group on Palliative Care, Co-chair of