Percutaneous kyphoplasty combined with 125I for treatment of metastatic spinal tumors 
Zhang Wei, Shi Jian-dang, Niu Ning-kui, Zhang Jun-shan, Geng Guang-qi
Chinese Journal of Tissue Engineering Research . 2014, (3): 371 -376 .  DOI: 10.3969/j.issn.2095-4344.2014.03.007