1. Division of Thoracic and Foregut Surgery, Swedish Medical Center and Cancer Institute, 1101 Madison Street, Suite 900, Seattle, WA 98104, USA
2. Surgical Specialists of Charlotte, 2001 Vail Ave., Suite 320, Charlotte, NC 28207, USA
3. Department of Surgery, Chest Disease Center, Beth Israel Deaconess Medical Center, 185 Pilgrim Road, Suite 201, Boston, MA 02215, USA