This study was _____ to investigate the efficacy of percutaneous vertebroplasty (PVP) on metastatic spinal tumor under the guidance of digital subtraction angiography (DSA). A: assigned B: designed C: resigned D: aligned
This study was _____ to investigate the efficacy of percutaneous vertebroplasty (PVP) on metastatic spinal tumor under the guidance of digital subtraction angiography (DSA). A: assigned B: designed C: resigned D: aligned
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