Name	Info	Provider	Link
	free resource	Public Library of Science	https://dx.plos.org/10.1371/journal.pone.0061330
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23577216/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/23577216
	free resource	scite Smart Citations	https://scite.ai/reports/23577216
SILVA SSU Database	free resource	SILVA	http://www.arb-silva.de/search/show/ssu/pubid/23577216