The UK's National Screening Committee has recommended that only a very small group of men at high risk of prostate cancer should be screened for the disease.
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在英國，除非你選擇退出器官捐贈制度，否則一般會被視為同意在身故後成為器官捐贈者。
Фото: Григорий Сысоев / РИА Новости
// 2. 计算前缀和：count[i]表示<=i的元素个数