Comparison of clinical efficacy and complications of 125I seed brachytherapy and stereotactic body radiation therapy for recurrent pulmonary metastases from colorectal carcinoma - Li, Jie; Zhang, Lijuan; Xie, Qigen; Wang, Weiguo; Hua, Yanyan; Sun, Zongqiong (Journal of Contemporary Brachytherapy, 2018)