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Smoking during pregnancy from 1999 to 2004: a study from the Medical Birth Registry of Norway |
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| Authors: | Kvalvik Liv Grimstvedt Skjaerven Rolv Haug Kjell |
| Affiliation: | Section for Social Medicine, University of Bergen, Norway. liv.kvalvik@isf.uib.no |
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| 本文献已被 PubMed 等数据库收录！ | |