sample size of 1 is invalid for any conclusions.

来源: Aidanmom 于 2012-12-28 07:07:13 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读： 次 (190 bytes)
回答: 举个例子说明美国医疗习惯的局限 由 壮士 于 2012-12-27 20:23:47
In US, bypass is less and less due to technology improvement for stent. Many cardiac surgeon are losing business to cardiologist, and are forced to do surgeries they used to 'bu Xie Yi gu'.

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