Name	Info	Provider	Link
	free resource	BioMed Central	https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-019-0413-x
Free full text from BORIS	free resource	Bern Open Repository and Information System	https://boris.unibe.ch/id/eprint/134317
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30979361/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/30979361
	free resource	Spiral, Imperial College Digital Repository	http://hdl.handle.net/10044/1/69254