1. Cleveland Clinic, Department of Cardiovascular Medicine; Cleveland Ohio
2. Department of Cardiology; Johns Hopkins University; Baltimore Maryland
3. Implantable Electronic Systems Division; St. Jude Medical; Sylmar California
4. Implantable Electronic Systems Division; St. Jude Medical; Rogers Minnesota
5. Implantable Electronic Systems Division; St. Jude Medical; St. Paul Minnesota
6. Department of Materials Science and Engineering; Penn State University, University Park; Pennsylvania