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Understanding factors influencing questionnaire response rates to maximise retention in a long term complex intervention trial
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3287709/ http://dx.doi.org/10.1186/1745-6215-12-S1-A134 |