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. 2016 Aug 25;6:31775. doi: 10.1038/srep31775

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Copyright © 2016, Macmillan Publishers Limited

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Multi-factor PERMANOVA composition models were constructed independently for neonates and infants (and by unweighted and weighted UniFrac distance metrics) using a backwards variable selection approach. Only factors retained in at least one of the four final multi-factor models are displayed. Abbreviations: BMI, body mass index; ETS, environmental tobacco smoke; NSV, neonatal study visit at 1-month of age; ISV, infant study visit at 6-months of age.