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. 2011 Dec 21;6(12):e27912. doi: 10.1371/journal.pone.0027912

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Rantala et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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X axis shows increasing number of infections (reference category: no infections for LRTIs and zero to one infections for URTIs) and Y axis shows logarithmic ORs with 95% confidence intervals for asthma onset.