1. Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
2. University of California, Irvine Edwards Lifesciences Foundation Cardiovascular Innovation and Research Center, Irvine, California
3. Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
4. Cardiovascular Physiology Core Facility, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin
5. Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wisconsin
6. Division of Pulmonary, Critical Care and Sleep Medicine, National Jewish Health, Denver, Colorado
7. Richard L. Roudebush Department of Veterans Affairs Medical Center, Indianapolis, Indiana
8. Department of Biomedical Engineering, University of California, Irvine, California