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APA Citation
Gao, W., Sha, B., Zhao, Y., Fan, Z., Liu, L., & Shen, X. (2017). comparison of simultaneous and sequential administration of fentanyl–propofol for surgical abortion: a randomized single-blinded controlled trial. Artificial cells, nanomedicine, and biotechnology, 45, 1045–1050. http://access.bl.uk/ark:/81055/vdc_100046451703.0x000035