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Intravenous Remifentanil versus Epidural Ropivacaine with Sufentanil for Labour Analgesia: A Retrospective Study
- Rong Lin,
- Yiyi Tao,
- Yibing Yu,
- Zhendong Xu,
- Jing Su,
- Zhiqiang Liu
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- Published: November 11, 2014
- https://doi.org/10.1371/journal.pone.0112283