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Ecg on heart background loop video1970-01-01T00:00:00+00:00Ecg looping on heart background, motion graphic background. PT17Shttps://d3e1m60ptf1oym.cloudfront.net/a89de2d6-0601-11e3-a483-1d104d398d79/ecg_heart_background_loop_xlarge.jpghttps://d3e1m60ptf1oym.cloudfront.net/a89de2d6-0601-11e3-a483-1d104d398d79/ecg_heart_background_loop_mp4_hd_video.mp4