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Subject
- Heart-Assist Devices8
- Pacemaker, Artificial7
- Patents as Topic3
- Cardiovascular Surgical Procedures2
- Electronics, Medical2
- Heart Ventricles2
- National Institutes of Health (U.S.)2
- Coronary Circulation1
- Diaphragm1
- Electric Stimulation1
- Electrocardiography1
- Hospital Costs1
- Implants, Experimental1
- Myocardium1
- Oxygenators1