DNT can be wrapped around oozing aortic graft to control bleeding.

DNT可被包裹在渗血的主动脉移植物周围起到止血作用。

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This review did not find enough evidence to say if two-phase pills worked any better than one-phase types for birth control, bleeding patterns, or staying on the pill.

本回顾研究没有发现足够的证据说明，在避孕，出血模式，或持续用药方面，双相口服避孕药有优于单相避孕药。

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In a statement to CNN, the FDA said the clips, when used correctly, can effectively control bleeding.

CNN: STORY HIGHLIGHTS

"There are a number of ways to mess it up, " said Kragh, who is a leading researcher on methods to control bleeding.

WSJ: Once-doubted tourniquet seen as Boston lifesaver

Although surgical techniques can sometimes be learned by practising on cadavers, microsurgery requiring careful control of bleeding needs living animals.

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