根据世界卫生组织的定义，一对夫妇12个月以上未采取任何避孕措施，性生活正常却未孕，就属于不孕不育。女性称为“不孕症”，男性称为“不育症”。
Additional reporting by Ema Sabljak, BBC England Data Unit
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First, test your own AI visibility today. Open ChatGPT, Claude, or Perplexity and ask questions where your content should logically appear as a relevant source. Be honest in your queries—use the actual questions your audience would ask rather than phrasing things to favor your content. See whether AI models cite you, and if so, how prominently. This reality check shows you where you stand currently.
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something you expect to have a few lines, but if it responds with