Effects on response rates and costs of stamps vs business reply in a mail survey of physicians.


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  2. Effects on response rates and costs of stamps vs business reply in a mail survey of physicians.


  3. Effects on response rates and costs of stamps vs business reply in a mail survey of physicians.

Urban N, Anderson GL, Tseng A. Effects on response rates and costs of stamps vs business reply in a mail survey of physicians. J Clin Epidemiol. 1993 May;46(5):455-9.

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