Questionnaire order significantly increased response to a postal survey sent to primary care physicians
| Autor: | Drummond, Frances J., Sharp, Linda, Carsin, Anne-Elie, Kelleher, Tracy, Comber, Harry |
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| Zdroj: | In Journal of Clinical Epidemiology 2008 61(2):177-185 |
| Databáze: | ScienceDirect |
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