![](http://www.alamy.com/thumbs/6/F8515257-3638-4093-A66E-2D7591FA683F/2EJPJ3P.jpg)
Tracing of electrocardiograms on graph paper. Records of heart activity. Heartbeat with arrhythmia. Selective focus with a portion out of focus.
Size: 5138px × 3456px
Photo credit: © Osvaldo Selva / Alamy / Afripics
License: Royalty Free
Model Released: No
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