据最近的全国调查报道，在美国，目前高达三分之一的75岁及75岁以上的男性接受PS A检验。
In the United States, up to one third of all men aged 75 years and older are currently receiving PSA testing, as reported in recent national surveys.
目前还没有具体数字，但人们相信死亡人数可能高达300人，另有数百人受伤。
Figures are not yet available but it is believed that the death toll could be as high as 300, with hundreds more injured.
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