This paper is in the following e-collection/theme issue:

Internet-based Survey & Research Methodology 

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Works citing "Web-Based Versus Traditional Paper Questionnaires: A Mixed-Mode Survey With a Nordic Perspective"

Lena Hohwü, Heidi Lyshol, Mika Gissler, Stefan Hrafn Jonsson, Max Petzold, Carsten Obel
J Med Internet Res 2013 (Aug 26); 15(8):e173 

According to Crossref, the following articles are citing this article (DOI 10.2196/jmir.2595):

(note that this is only a small subset of citations)

1. Bjereld Y, Daneback K, Petzold M. Differences in prevalence of bullying victimization between native and immigrant children in the Nordic countries: a parent-reported serial cross-sectional study. Child: Care, Health and Development 2014;:n/a [CrossRef]
2. Verhagen EA, Clarsen B, Bahr R. A peek into the future of sports medicine: the digital revolution has entered our pitch. British Journal of Sports Medicine 2014;48(9):739 [CrossRef]