1. Department of Mechanical and Aerospace Engineering, One Shields Avenue, University of California Davis, Davis, California 95616, United States
2. UC Davis Lung Center, One Shields Avenue, University of California Davis, Davis, California 95616, United States
3. Department of Biomedical Engineering, One Shields Avenue, University of California Davis, Davis, California 95616, United States
4. Department of Electrical and Computer Engineering, One Shields Avenue, University of California Davis, Davis, California 95616, United States
5. VA Northern California Health Care System, 10535 Hospital Way, Mather, California 95655, United States
6. Department of Internal Medicine, 4150 V Street, University of California Davis, Sacramento, California 95817, United States