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在队列研究中,暴露人群和非暴露人群被追访一段时间来确定暴露因素与疾病发病的关联。队列研究的关键点是暴露先于结果的发生。
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OH emission
O.Henry
OHI
Ohio Greenbelt Town
Ohio Library and Information Network
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ohio shale gas play
Ohio Sky Survey
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Ohio State University Radio Observatory
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Ohio Winesburg
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OH/IR star
OH/IR星
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Oh Jang-hwan
OH line
Ohlin’s prediction study on success or failure for parole
Ohlson galactic plane
Ohlson galactic pole
Ohm
ohm
ohmage
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