单选题

    用PubMed的主题词检索心血管疾病(Cardiovascular Diseases)微量元素(trace elements)代谢的有关文献,应采用的检索式为 ( )

    A. "Cardiovascular Diseases/metabolism"[Mesh] AND "Trace Elements/metabolism"[Mesh]
    B. (( "Cardiovascular Diseases/blood"[Mesh] OR "Cardiovascular Diseases/cerebrospinal fluid"[Mesh] OR "Cardiovascular Diseases/metabolism"[Mesh] OR "Cardiovascular Diseases/urine"[Mesh] )) AND ( "Trace Elements/blood"[Mesh] OR "Trace Elements/cerebrospinal fluid"[Mesh] OR "Trace Elements/deficiency"[Mesh] OR "Trace Elements/metabolism"[Mesh]
    C. (( "Cardiovascular Diseases/blood"[Mesh] OR "Cardiovascular Diseases/cerebrospinal fluid"[Mesh] OR "Cardiovascular Diseases/enzymology"[Mesh] OR "Cardiovascular Diseases/metabolism"[Mesh] OR "Cardiovascular Diseases/urine"[Mesh] )) AND ( "Trace Elements/blood"[Mesh] OR "Trace Elements/cerebrospinal fluid"[Mesh] OR "Trace Elements/deficiency"[Mesh] OR "Trace Elements/metabolism"[Mesh] OR "Trace Elements/pharmacokinetics"[Mesh] OR "Trace Elements/urine"[Mesh] )
    D. "Cardiovascular Diseases"[Mesh] AND "Trace Elements"[Mesh] )
    E. (( "Cardiovascular Diseases/blood"[Mesh] OR "Cardiovascular Diseases/cerebrospinal fluid"[Mesh] OR "Cardiovascular Diseases/enzymology"[Mesh] OR "Cardiovascular Diseases/metabolism"[Mesh] OR "Cardiovascular Diseases/urine"[Mesh] )) AND ( "Trace Elements/blood"[Mesh] OR "Trace Elements/cerebrospinal fluid"[Mesh] OR "Trace Elements/metabolism"[Mesh] OR "Trace Elements/pharmacokinetics"[Mesh] OR "Trace Elements/urine"[Mesh] )

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