Charles W Lanks1, Darryl Y Sue1, Harry B Rossiter1,2,3. 1. 1 Division of Respiratory and Critical Care Physiology and Medicine, Harbor-University of California Los Angeles (UCLA) Medical Center, Torrance, California. 2. 2 Rehabilitation Clinical Trials Center, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California; and. 3. 3 Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom.