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The Preventative Services Task Force which provides advice for the officials of the  Department of Health agency of the U.S.said that the simple blood test called PSA may  do more harm than good.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。