Beware using secular trends in deaths to judge effectiveness
Autor: | Brewster, David H, Bhatti, Lesley A, Thomson, Catherine S, Cameron, David A, Dewar, John A |
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Zdroj: | BMJ: British Medical Journal, 2013 Jul . 347(7916), 23-23. |
Databáze: | JSTOR Journals |
Externí odkaz: |