Be more specific: Depending on what you count as a device, there are many, maybe dozens, and they work in different ways. Even narrowing down to left ventricular assist devices, there are many types with different modes of operation.
Answered 2/2/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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