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APA Citation
Schwartz, D. A., Shah, A. A., Zogg, C. K., Nicholas, L. H., Velopulos, C. G., Efron, D. T., Schneider, E. B., & Haider, A. H. (n.d.). operative delay to laparoscopic cholecystectomy. Journal of trauma and acute care surgery, 79(1), . http://access.bl.uk/ark:/81055/vdc_100025962107.0x00003a