A meta - analysis of cohort studies on cancer mortality among workers exposure to chrysotile fiber alone 单纯接触温石棉人员癌症死亡队列研究的荟萃分析
The investigative team enrolled 56 patients with liver cirrhosis in a prospective cohort study 试验小组纳取了56名患有英硬化的患者进行了列队性研究
A cohort study is a longitudinal study in which a specific population is studied over time 群体研究是在一段时间内对特定群体进行的纵向研究（随机取样） 。
An historical cohort study on the risk factors for nosocomial infection in four comprehensive hospital in guiyang 贵阳市综合医院院内感染危险因素历史队列研究
A prospective cohort study on cardiovascular disease risk for overweight and nonoverweight hypertensives 高血压患者超重和非超重与心血管病危险性关系的前瞻性研究
A restrospective cohort study of the risk of gastrointestinal cancer relation to environmental crocidolite exposure 环境接触青石棉与胃肠道肿瘤发病危险的队列研究
A prospective cohort study of the relationship between tobacco smok ing , alcohol drinking and the mortality of gastric carcinoma 饮酒与胃癌死亡关系的前瞻性队列研究
Title ： are sulphonylureas all the same ? a cohort study on cardioascular and cancer - related mortality 文题：所有磺脲类降糖药都是一样的吗？心血管及恶性肿瘤死亡率的队列研究。
Title ： are sulphonylureas all the same ? a cohort study on cardiovascular and cancer - related mortality 标题：所有磺脲类降糖药作用相同吗？一项心血管及恶性肿瘤相关死亡率的队列研究。
The retrospective cohort study of vaginal bleeding in the first - trimester of pregnancy on full - term infant ' s development effect 恩丹西酮和地塞米松预防小儿术后恶心呕吐的临床研究
