Quantitative determination of butorphanol and its metabolites in human plasma by gas chromatography-electron capture negative-ion chemical ionization mass spectrometry
1996 ◽
Vol 682
(2)
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pp. 289-300
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1990 ◽
Vol 19
(6)
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pp. 382-386
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1982 ◽
Vol 9
(3)
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pp. 108-110
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2005 ◽
Vol 19
(2)
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pp. 128-132
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1979 ◽
Vol 172
(1)
◽
pp. 279-286
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1993 ◽
Vol 22
(4)
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pp. 235-242
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1987 ◽
Vol 421
◽
pp. 281-289
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1982 ◽
Vol 231
(1)
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pp. 194-199
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1986 ◽
Vol 383
◽
pp. 158-165
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1990 ◽
Vol 530
◽
pp. 295-305
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1984 ◽
Vol 11
(1)
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pp. 50-54
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