Relationship Between Visceral Metastases and Survival in Patients with Metastasis‐related Spinal Cord Compression oleh Deng‐xing Lun, Xiao‐dong Wang, Yu‐dong Ji, Yong‐cheng Hu, Xiong‐gang Yang, Xiu‐chun Yu, Guo‐chuan Zhang, Qing‐shan Zhuang