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Enter search terms to find related medical topics, multimedia and more.
• Use “ “ for phrases o [ “pediatric abdominal pain” ] • Use – to remove results with certain terms o [ “abdominal pain” –pediatric ] • Use OR to account for alternate terms o [teenager OR adolescent ]
工具避孕可防止精子进入女性子宫。它们包括避孕套、隔膜、宫颈帽和避孕海绵。有些避孕套含有杀精剂。杀精剂应与避孕套和不含它们的其他避孕工具一起使用。
