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The effect of a voucher incentive on a survey response rate in the clinical setting: a quasi-randomized controlled trial
Pieper, Dawid, Kotte, Nina, Ober, PeggyVolume:
18
Language:
english
Journal:
BMC Medical Research Methodology
DOI:
10.1186/s12874-018-0544-4
Date:
December, 2018
File:
PDF, 293 KB
english, 2018