Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34580784/
	subscription/membership/fee required	Springer	https://dx.doi.org/10.1007/s00520-021-06576-0
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34580784
Full text from	free resource	Linkoping University Electronic Press	http://liu.diva-portal.org/smash/get/diva2:1603396/FULLTEXT01.pdf