Zhu, He J., Romaine C. Nichols Jr., Randal H. Henderson, Christopher G. Morris, Dat C. Pham, Lisa Jones, and Bradford S. Hoppe. 2018. “Proton Therapy in Stage II–IV Non-Small Cell Lung Cancer: Pattern of Care and Impact on Trial Accrual”. Acta Oncologica 57 (5):692-93. https://doi.org/10.1080/0284186X.2017.1398413.