1. Department of Radiation Oncology, Indiana University, Indianapolis, IN, USA
2. Division of Hematology and Oncology, Indiana University, Indianapolis, IN, USA
3. Department of Pathology, Indiana University, Indianapolis, IN, USA
4. Department of Thoracic Surgery, Indiana University, Indianapolis, IN, USA
5. Division of Pulmonology, Indiana University, Indianapolis, IN, USA
6. Division of Gastroenterology, Indiana University, Indianapolis, IN, USA
7. Department of Clinical Oncology, Hong Kong University Shenzhen Hospital, Shehzhen, China
8. Department of Clinical Oncology, Hong Kong University Li Ka Shing Medical School, Hong Kong, China
9. Department of Radiation Oncology, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, OH, USA