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Effect of numbering of return envelopes on participation, explicit refusals, and bias: experiment and meta-analysis |
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Titel: |
Effect of numbering of return envelopes on participation, explicit refusals, and bias: experiment and meta-analysis |
Auteur: |
Perneger, Thomas V Cullati, Stéphane Rudaz, Sandrine Agoritsas, Thomas Schmidt, Ralph E Combescure, Christophe Courvoisier, Delphine S |
Verschenen in: |
BMC medical research methodology |
Paginering: |
Jaargang 14 (2014) nr. 1 pagina's xx |
Jaar: |
2014-01-15 |
Inhoud: |
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Uitgever: |
BioMed Central, London |
Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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