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. 2007 May 7;39(2):67–75. doi: 10.1016/j.jcv.2007.03.012

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Copyright © 2007 Elsevier B.V. All rights reserved.

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Fig. 1 — The monthly distribution of tested respiratory specimens (open bars). The HRV-QPM detections (filled bars) are presented as a percentage of the specimens tested each month. Seasons are indicated.