A Comparative Study of Patients With Early-Stage Non-Small Cell Lung Cancer Treated With Stereotactic Body Radiation Therapy Using CyberKnife and Linear Accelerator-Based Volumetric Modulated Arc Therapy. - Deshpande SR; Grubb WR; Kharouta M; Zhang Y; Zheng Y; Podder TK; Towe C; Young B; Machtay M; Biswas T (Practical radiation oncology, 2022)