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. 2015 Jul 30;9(7):e0003943. doi: 10.1371/journal.pntd.0003943

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Fig 4 — Percentages of DF (dotted lines) and DHF cases (solid lines) with low septal and lateral S wave (A, B) and septal and lateral Ea wave (C, D) and high E/Ea ratios (E) determined based on published age-specific normal values (21). * different from DF (P < .05).