Unexpected effects of a prior feedback letter and a professional layout on the response rate to a mail survey in Geneva
- PMID: 9578862
- PMCID: PMC1756667
- DOI: 10.1136/jech.52.2.128
Unexpected effects of a prior feedback letter and a professional layout on the response rate to a mail survey in Geneva
References
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- Am J Public Health. 1996 Mar;86(3):388-93 - PubMed
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