1. The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, Maryland, USA.
2. Department of Physical Medicine and Rehabilitation, The Center for Rehabilitation Sciences Research, Uniformed Services University of Health Sciences, Bethesda, Maryland, USA.
3. Walter Reed National Military Medical Center, Bethesda, Maryland, USA.
4. Department of Anesthesia and Biomedical Engineering, Yale University, New Haven, Connecticut.
5. Lung Biotechnology PBC, Silver Spring, Maryland, USA.