People in Tirol injured by avalanche during 1994–2005 and admitted to the Innsbruck Medical University Hospital were included.

方法：本研究包含1994-2005年蒂罗尔遭受雪崩损伤并收治于因斯布鲁克医科大学附属医院的患者。

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So the HPV vaccine, that is often recommended for girls, should extend to boys as well, say researchers from Innsbruck Medical University in Austria.

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