Howitz RI.
【文题(必填)】
New methods of sampling and analysis to remove bias in case-control research: no association found for estrogens and endometrial cancer.
【年份(必填)】
Clinic Research, 1977, 25: 459a.
【全文链接或数据库名称(选填)】
| 这篇有两个版本,我想找的是459a的这篇,谢谢 |
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楼主: gdyxylj
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[外文文献求助] New methods of sampling and analysis to remove bias in case-control research: no |
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