Name	Info	Provider	Link
	free resource	Atypon	https://journals.asm.org/doi/10.1128/mBio.02621-21?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
Free full text from BORIS	free resource	Bern Open Repository and Information System	https://boris.unibe.ch/id/eprint/163111
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34724816/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34724816