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. 2015 Jun 3;10(6):e0128526. doi: 10.1371/journal.pone.0128526

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© 2015 Seneviratna 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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Fig 2 — Bar chart showing number of patients with symptom onset within each of the 4 pre specified time intervals. The peak incidence of symptom onset was observed in the 6:00-noon period (P<0.001).