这四种征兆就是知名心血管专家昌西。克兰·多尔博士在最近的“心肌梗死：心脏健康的特刊”报告中不断强调的重点。

These four things are the focus of a recent video presentation by renowned cardiovascular expert Dr. Chauncey Crandall: Silent Heart Attacks: a Special Newsmax Heart Health Report.

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著名心脏病专家昌西克兰·多尔博士说，但是还有一些非常微小的症候，很多人都忽视了，或者将它们归咎于不太危险的小病。

Chauncey Crandall, there are some signs that are so minor, many people ignore them or chalk them up to symptoms of a less threatening ailment.

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