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. 2020 Aug 11;20(16):4484. doi: 10.3390/s20164484

Figure 4.

Figure 4

Blood pressure measurement landscape; approaches, methods, processing, and transducing layers. 1 PWA: At least a single pulsatility sensor or a single cardiovascular sensor is implemented; 2 PWV: At least two pulsatility sensors and/or additional cardiovascular sensor is implemented.