A heart attack happens if the flow of oxygen-rich blood to a section of heart muscle suddenly becomes blocked and the heart can't get oxygen. Most heart attacks occur as a result of coronary heart disease (CHD). CHD is a condition in which a waxy substance called plaque builds up inside of the coronary arteries.
[斯坦福大学课程：临床解剖学].1
内镜检查发现鼻息肉
经阴道阑尾切除术（NOTES）
开放性修补膀胱阴道瘘（经阴式入路）
发表于 2017-1-20 16:00:03
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