Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S1568-9883(17)30117-8
	free resource	scite Smart Citations	https://scite.ai/reports/28962975
SILVA LSU Database	free resource	SILVA	http://www.arb-silva.de/search/show/lsu/pubid/28962975