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Poor quality of reporting confounding bias in observational intervention studies: a systematic review |
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| Authors: | Groenwold Rolf H H Van Deursen Anna M M Hoes Arno W Hak Eelko |
| Affiliation: | Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands. r.h.h.groenwold@umcutrecht.nl. |
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| 本文献已被 PubMed 等数据库收录！ | |