1. Department of Biomedical Engineering, Schools of Medicine and Engineering University of Alabama at Birmingham Alabama USA
2. Department of Microbiology and Immunology Dalhousie University Halifax Nova Scotia Canada
3. Department of Radiation Oncology, Baylor College of Medicine One Baylor Plaza Houston Texas USA
4. Department of Medicine, Section on Pulmonary and Critical Care Medicine, Baylor College of Medicine One Baylor Plaza Houston Texas USA