1. Department of Medical Imaging, Division of Nuclear Medicine, University of Western Ontario, 800 Commissioners Rd E, London, ON N6A 5W9, Canada
2. CTI Clinical Trial & Consulting Services, 100 E. RiverCenter Blvd, Covington, KY 41011, USA
3. Department of Surgery, Division of Thoracic Surgery, University of Western Ontario, 268 Grosvenor Street, St. Joseph's Hospital Rm. E3-117, London, ON N6A 4V2, Canada
4. Department of Medicine, Respirology Division, London Health Sciences Centre, University of Western Ontario, 800 Commissioners Rd E, London, ON N6A 5W9, Canada