文献报道，在未服用ASA及其他NSAIDs的胃十二指肠溃疡患者中，90%以上均有幽门螺杆菌感染引起的慢性活动性胃炎，仅约5%～10%的十二指肠溃疡患者及30%的胃溃疡患者无明确的幽门螺杆菌感染的证据。
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