Objective We assessed value of markedly down sloping pr segments in inferior leads for predicting false positive exercise test.
目的探讨下壁导联p - R段明显下斜与运动试验假阳性的关系。
Objective:To offer information on the supervision by analysing the change of origin of false and inferior species from Chinese medicinal materials (CMM) markets.
目的：分析研究中药材市场假劣品来源分布变化，为加强监管提供信息。
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