(Q51728368)
Statements
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Postoperative patient-controlled analgesia with tramadol: analgesic efficacy and minimum effective concentrations. (English)
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Lehmann KA
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Kratzenberg U
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Schroeder-Bark B
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Horrichs-Haermeyer G
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1 September 1990
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6
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212-220
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3
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Identifiers
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