Early metastasis detected in patients with multifocal pulmonary ground-glass opacities (GGOs). Issue 3 (22nd October 2017) - Li, Ruoyan; Li, Xiao; Xue, Ruidong; Yang, Fan; Wang, Shaodong; Li, Yanmeng; Shen, Danhua; Sun, Kunkun; Chen, Kezhong; Weng, Wenhan; Bai, Fan; Wang, Jun