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Study types and study issues in clinical medicine |
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| Authors: | Koller Michael Lorenz Wilfried |
| Institution: | Center for Clinical Studies, University Hospital Regensburg, D-93042 Regensburg, Germany. michael.koller@klinik.uni-regensburg.de |
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| 本文献已被 ScienceDirect PubMed 等数据库收录！ | |