回顾性队列研究
retrospective cohort study
Outbreak
北京自然博物馆自然历史研究所
beijing natural history museum
Institute of Natural History
华侨华人历史研究
overseas chinese history studies
建筑历史研究
research on architectural history
study on architecture history
军事历史研究
military historical research
农业历史研究
agricultural history research
前期历史研究
Historical research of early stage
History study in the early stage of planning
研究历史与现状
research history and status quo
the history and recent advance
油气藏研究历史
research history of reservoirs
队列研究,回顾性
retrospective cohort study
队列研究
cohort study
cohort study
Cohort studies
Cohort st
matched cohort analysis
cohort mortality study
Breast cancer Induced abortion Cohort study Nested
esophageal cancer
Comparative study
cohordt study
longitudinal study