There are few or no symptoms early in the disease and no effective screening tests.

对于这些疾病早期很少或没有症状，并且无有效的筛查试验。

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The findings were published in The Lancet Oncology, and researchers said it could help pave the way for effective screening to prevent cervical cancer in rural and resource-poor settings.

这一发现发表在《柳叶刀—肿瘤学》上，研究人员称这一发现为在农村和资源短缺的地区有效筛查并预防宫颈癌铺平了道路。

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Small bowel enteroclysis is an effective screening test.

小肠钡灌检查可作为小肠克罗恩病的有效筛查手段。

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They might end up getting cancer." Virtual colonoscopy as a screening tool is quite effective thats one of the reason why national cancer Institute recommends this as one of the screening device."

VOA: standard.2010.04.07

That would mean more effective screening (which is planned already), and also a willingness by those without the symptoms to be treated.

ECONOMIST: Thirty years of a disease

She said defeating malnutrition would only be possible through effective screening, good communication between health services and close monitoring throughout a patient's hospital stay.

BBC: One in seven elderly 'malnourished'

"You can have perfectly effective screening processes and admissions processes and not in any way be able to predict behavior a decade forward, " she said.

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