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The following, in order:
... <back> <ack> <p>We are grateful to Uri Alon, Harley McAdams, Lee Kroos, Patrick Piggot, and Patrick Stragier for critical comments of the manuscript. ...</p> ... </ack> <fn-group> <fn id="n1" fn-type="conflict"> <p><bold>Conflicts of interest.</bold> The authors have declared that no conflicts of interest exist.</p> </fn> <fn id="n2" fn-type="con"> <p><bold>Author contributions.</bold> PE, MF, STJ, EMC, DZR, TS, JSL, and RL conceived and designed the experiments. PE, MF, DZR, STW, CF, and KH performed the experiments. PE, MF, STJ, EMC, DZR, and JSL analyzed the data. PE, MF, STJ, EMC, DZR, and JSL contributed reagents/materials/analysis tools. PE, MF, STJ, EMC, JSL, and RL wrote the paper.</p> </fn> </fn-group> ... </back> ...
<article> ... <back> ... <ref-list>...</ref-list> <fn-group> <fn> <p>Competing interests: None declared.</p> </fn> </fn-group> </back> </article>