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APA Citation
Tanaka, M., Okane, M., Watanabe, S., Hamaya, Y., & Endo, T. (1991). combination of Epidural Morphine and Fentanyl for Postoperative Analgesia. Regional anesthesia, 16(4), 214–217. http://access.bl.uk/ark:/81055/vdc_100144735327.0x000056