The present invention overcomes {HEAD ~ the multistage problems} by providing {TAIL ~ a single two row stage} containing one row of blades in which there is some axial and some centrifugal blood flow, and a second row of blades in which the blood flow is purely axial 
by providing
The present invention overcomes { HEAD ~ the multistage problems } by providing { TAIL ~ a single two row stage } containing one row of blades in which there is some axial and some centrifugal blood flow , and a second row of blades in which the blood flow is purely axial
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