1. Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
2. Department of Internal Medicine, University of California, Davis, 4150 V Street,
Suite 3400, Sacramento, California 95817, United States
3. Center for Comparative Respiratory Biology and Medicine, University of California, Davis, Davis, California 95616, United States
4. VA Northern California Health Care System, 10535 Hospital Way, Mather, California 95655, United States