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Evaluation of the effects of an offer of an incentive on the rate of questionnaire return: a nested RCT
| Autores principales: | , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
BioMed Central
2015
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660160/ http://dx.doi.org/10.1186/1745-6215-16-S2-P97 |