PDF(915 KB)
Effect of butorphanol and fentanyl on patient-controlled intravenous analgesia
NIU Hong-zhang
Chinese Journal of School Doctor ›› 2019, Vol. 33 ›› Issue (6) : 445-447.
PDF(915 KB)
PDF(915 KB)
Effect of butorphanol and fentanyl on patient-controlled intravenous analgesia
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