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US launches new crewed mission to space station, to bring home stranded astronauts
NASA and SpaceX launched a new crewed mission to the International Space Station on Friday, a critical step to bring home ...
UK study suggests phone bans may not be effective 英国研究指出校园手机禁令 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...
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幽门螺杆菌感染解析
2.治疗原则:根据《中国幽门螺杆菌感染防控指南》,以下人群需根除治疗:(1)消化性溃疡、胃癌术后患者；(2)慢性胃炎伴消化不良症状；(3)有胃癌家族史或长期服用阿司匹林者。