''We have more sensors on our cars than we have on human beings. With a precision health approach, every person could know his or her normal baseline for dozens of measures. Automatic data analysis could spot patterns of outlier data points and flag the onset of ill health, providing an opportunity for intervention, prevention or cure''

http://medical.electronicspecifier.com/sensors-1/wearable-sensors-can-tell-when-you-are-getting-ill

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