1. Department of Anesthesiology; Medical College of Wisconsin; Milwaukee Wisconsin USA
2. School of Engineering; Grand Valley State University; Grand Rapids Michigan USA
3. Cardiovascular Research Center; Medical College of Wisconsin; Milwaukee Wisconsin USA
4. Department of Physiology; Medical College of Wisconsin; Milwaukee Wisconsin USA
5. Research Service; Zablocki VA Medical Center; Milwaukee Wisconsin USA
6. Department of Biomedical Engineering; Marquette University; Milwaukee Wisconsin USA