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APA Citation
Puffer, R. C., Mallory, G. W., Burrows, A. M., Curry, T. B., & Clarke, M. J. (2016). patient and Procedural Factors that Influence Anesthetized, Nonoperative Time in Spine Surgery. Global spine journal, 6, 447–451. http://access.bl.uk/ark:/81055/vdc_100068336561.0x000012