Name	Info	Provider	Link
	free resource	Public Library of Science	https://dx.plos.org/10.1371/journal.pone.0025299
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21966490/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/21966490
SILVA SSU Database	free resource	SILVA	http://www.arb-silva.de/search/show/ssu/pubid/21966490