International Archives of Otorhinolaryngology

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Ebert JF, Huibers L, Christensen B, Christensen MB.
Paper- or Web-Based Questionnaire Invitations as a Method for Data Collection: Cross-Sectional Comparative Study of Differences in Response Rate, Completeness of Data, and Financial Cost.

J Med Internet Res 2018;
20 (01) e24

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