Effects of estimated completion time and unconditional gift certificates on questionnaire response | Journal of Epidemiology & Community Health

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Effects of estimated completion time and unconditional gift certificates on questionnaire response

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Cite this article as:: van Gelder MMHJ, Geuijen PM, de Vries JHM, et al

Effects of estimated completion time and unconditional gift certificates on questionnaire response

J Epidemiol Community Health 2017;71:520.