Increasing response rates to postal questionnaires - Effect of incentives on response rates must be considered

P J Roberts, C Roberts, B Sibbald, D J Torgerson

Research output: Contribution to journalLetterpeer-review

Original languageEnglish
Pages (from-to)444-444
Number of pages1
JournalBritish medical journal
Volume325
Issue number7361
Publication statusPublished - 24 Aug 2002

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