Name	Info	Provider	Link
	subscription/membership/fee required	Nature Publishing Group	https://doi.org/10.1038/s41437-017-0040-3
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/29302050/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/29302050
	free resource	scite Smart Citations	https://scite.ai/reports/29302050
SILVA SSU Database	free resource	SILVA	http://www.arb-silva.de/search/show/ssu/pubid/29302050