Web-based survey attracted age-biased sample with more severe illness than paper-based survey

Title
Web-based survey attracted age-biased sample with more severe illness than paper-based survey
Authors
Keywords
-
Journal
JOURNAL OF CLINICAL EPIDEMIOLOGY
Volume 62, Issue 10, Pages 1068-1074
Publisher
Elsevier BV
Online
2009-02-26
DOI
10.1016/j.jclinepi.2008.10.015

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