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References 

1. American Society for Testing and Materials Committee F-4.05. In: Standard performance specification for cerebral stereotactic instruments. West Conshohocken (Pa): ASTM; 1990;p. 1–6
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6. McAfee PC, Cunningham B, Holsapple G, et al. A prospective, randomized, multicenter Food and Drug Administration investigational device exemption study of lumbar total disc replacement with the Charite artificial disc versus lumbar fusion: part II: evaluation of radiographic outcomes and correlation of surgical technique accuracy with clinical outcomes. Spine. 2005;30:1576–1583[2000;25:2940-52]
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7. Ramrath L, Hofmann UG, Schweikard A. A robotic assistant for stereotactic neurosurgery on small animals. Int J Med Robotics Comput Assist Surg. 2008;4:295–303
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