Name	Info	Provider	Link
	free resource	BioMed Central	https://bmcpalliatcare.biomedcentral.com/articles/10.1186/s12904-021-00793-4
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34289838/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34289838