据《美国医学会杂志》上的一篇文章所载，事实并非如此——至少对医治心血管疾病的医疗设备来说是这样。
That's not always the case, at least for cardiovascular devices. That's according to an article in the Journal of the American Medical Association.
新的研究结果已经在美国医学会杂志上公布出来，发现激素替代疗法的时机选择对心血管疾病有影响性的改变。
The new research, published in the Journal of the American Medical Association, found HRT's timing could influence its effect on cardiovascular disease.
这项研究调查了美国德州大学西南医学中心180名采用深静脉移植片进行血管重建的患者。
The study examined 180 patients who underwent arterial reconstructions using deep-vein grafting at UT Southwestern.
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