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APA Citation
Weiser, T. G., Haynes, A. B., Molina, G., Lipsitz, S. R., Esquivel, M. M., Uribe-Leitz, T., Fu, R., Azad, T., Chao, T. E., Berry, W. R., & Gawande, A. A. (n.d.). estimate of the global volume of surgery in 2012: an assessment supporting improved health outcomes. Lancet, 385, S11–. http://access.bl.uk/ark:/81055/vdc_100051208904.0x00003e