. 2009 Nov 30;9(12):9572–9581. doi: 10.3390/s91209572
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
Figure 2.
Waveforms of ECG and heartbeat.