Natural experiments: an underused tool for public health?
| Autor: | Petticrew, M. *, Cummins, S., Ferrell, C., Findlay, A., Higgins, C., Hoy, C., Kearns, A., Sparks, L. |
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| Zdroj: | In Public Health 2005 119(9):751-757 |
| Databáze: | ScienceDirect |
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| Autor: | Petticrew, M. *, Cummins, S., Ferrell, C., Findlay, A., Higgins, C., Hoy, C., Kearns, A., Sparks, L. |
|---|---|
| Zdroj: | In Public Health 2005 119(9):751-757 |
| Databáze: | ScienceDirect |
| Externí odkaz: |
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Full Text from ScienceDirect