“retrospective cohort study”概念、定义、翻译-科学时代

单词	retrospective cohort study
释义	统计学词汇手册 retrospective cohort study 回顾同期群研究
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科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

retrospective cohort study