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P. Vasudevan
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What did cardiologist Dr. Paul Zoll invent in Massachusetts in
What did cardiologist Dr. Paul Zoll invent in Massachusetts in 1952?
A. EKG
0 votes (0%)
A. EKG
B. Artificial heart valve
0 votes (0%)
B. Artificial heart valve
C. Artificial heart
0 votes (0%)
C. Artificial heart
D. Pacemaker
1 vote (100%)
D. Pacemaker
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