A clinical prediction model for lung metastasis risk in osteosarcoma: A multicenter retrospective study oleh Shengping Zheng, Longhao Chen, Jiaming Wang, Haosheng Wang, Zhaohui Hu, Wanying Li, Chan Xu, Minmin Ma, Bing Wang, Yangjun Huang, Qiang Liu, Zhi-Ri Tang, Guanyu Liu, Tingting Wang, Wenle Li, Chengliang Yin