Φορτώνει......
Tobacco industry documents: comparing the Minnesota Depository and internet access
Objective: To assess the comparability of searches conducted on two publicly available tobacco industry document collections: hard copies housed and maintained by a neutral party in the Minnesota Depository and electronic copies available through tobacco industry maintained websites. Methods: We con...
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| Κύριοι συγγραφείς: | , , |
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| Μορφή: | Artigo |
| Γλώσσα: | Inglês |
| Έκδοση: |
BMJ Group
2002
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| Θέματα: | |
| Διαθέσιμο Online: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1747640/ https://ncbi.nlm.nih.gov/pubmed/11891371 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1136/tc.11.1.68 |
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