中国医学创新  2025, Vol. 22 Issue (20): 108-111    DOI: 10.3969/j.issn.1674-4985.2025.20.025
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Comparison of Analgesic Effects of Different Concentrations of Sufentanil Combined with Ropivacaine in Painless Delivery
NIU Zheng
First-author's address: Anesthesiology, the Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215002, China
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