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為美國衛生機構官員提供谘詢的預防疾病服務工作組(The Preventative Services Task Force)說，對身體健康的男子而言，一種叫做PSA的簡單驗血可能弊大於利。

A simple blood test called PSA might do more harm than good for a healthy man, says the Preventative Services Task Force who provides consultations for the US health agencies.