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APA Citation
Shen, X., Li, Y., Xu, S., Wang, N., Fan, S., Qin, X., Zhou, C., & Hess, P. E. (2017). epidural Analgesia During the Second Stage of Labor. Obstetrics and gynecology, 130(5), . http://access.bl.uk/ark:/81055/vdc_100058079721.0x000024