1997年，一份由芬兰设在赫尔辛基的国家公共卫生研究院（National Public Health Institute）的研究者们进行的研究确定了苹果的类黄酮素，显而易见，在减少患肺癌的风险中，类黄酮槲皮素演出着关键的角色。
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National Institute Of Public Health 卫生研究所 ; 国家公共卫生研究所
A public health laboratory diagnostic service was established at the National Institute of Hygiene and Epidemiology and training courses were conducted for clinicians and microbiologists.
国家卫生和流行病学研究所建立了公共卫生实验室诊断服务，对临床医师和微生物学家进行培训。
Yet it has not been easy to curb smoking in public psychiatric hospitals, according to researchers from the National Association of State Mental Health Program Directors research Institute.
全国各州精神卫生规划理事会的研究人员调查显示，要想在公共精神病医院实行禁烟实属不易。
Specimens from 53 contacts of the cases were collected and are being tested by the National Institute for Public Health laboratory.
对该病人的53位接触者采集了标本，正由国家公共卫生研究所实验室进行检验。
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