The researchers measured total and free reproductive hormone levels at study entry and two years later.
研究人员在研究起始和终点均测量了游离及总生殖激素水平。
Information was obtained about current asthma-related symptoms as well as height and weight at age 18 and at study entry.
因此得到了关于目前与哮喘相关的症状以及十八岁时的身高体重和参与的研究项目的资料。
The participants provide self reports of history of diabetes, aspirin use, and various lifestyle factors at study entry and in yearly follow-up questionnaires.
参与者在研究之初就提供了个人的糖尿病史，阿司匹林的服用记录以及各种生活方式因素，然后每年做持续的调查问卷。
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