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Powell A, Baker-Austin C, Wagley S, Bayley A, Hartnell R.Powell A, et al.Microb Ecol. 2013 May;65(4):924-7. doi: 10.1007/s00248-013-0201-8. Epub 2013 Mar 1.Microb Ecol. 2013.PMID: 23455432