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Correction and Republication: Internet Versus Mailed Questionnaires: A Controlled [Correction of "Randomized"] Comparison (2)
| Autor principal: | |
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
Gunther Eysenbach
2004
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1550625/ http://dx.doi.org/10.2196/jmir.6.4.e38 |