1. Department of Biomedical Engineering, Yale University, New Haven, CT 06520
2. Translational Research Imaging Center, Yale School of Medicine, New Haven, CT 06520
3. Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06510
4. Department of Biomedical Engineering and Vascular Biology and Therapeutics Program, Yale University, New Haven, CT 06520
5. Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06510; West Haven Connecticut VA and Pulmonary and Critical Care Medicine, VA Connecticut Healthcare System, West Haven, CT 06516