Name	Info	Provider	Link
	subscription/membership/fee required	Springer	https://dx.doi.org/10.1007/s00792-012-0485-5
NBRP resources	free resource	National BioResource Project	https://rrc.nbrp.jp/references/list?pubmed=23052830
SILVA SSU Database	free resource	SILVA	http://www.arb-silva.de/search/show/ssu/pubid/23052830