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

Internet-based Survey & Research Methodology 


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Jim McCambridge, Eleftheria Kalaitzaki, Ian R. White, Zarnie Khadjesari, Elizabeth Murray, Stuart Linke, Simon G. Thompson, Christine Godfrey, Paul Wallace
J Med Internet Res 2011 (Nov 18); 13(4):e96 

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