单项选择题
A.心室B.肺部C.肝脏D.白细胞
A.900pg/mlB.450pg/mlC.300pg/mlD.1800pg/ml
A.300pg/mlB.450pg/mlC.900pg/mlD.1800pg/ml
A.利钠肽B.B型利钠肽C.N端-B型利钠肽D.N端-B型钠尿肽原
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