Media type: E-Article Title: Methodological Challenges in Online Trials Contributor: Murray, Elizabeth; Khadjesari, Zarnie; White, Ian R; Kalaitzaki, Eleftheria; Godfrey, Christine; McCambridge, Jim; Thompson, Simon G; Wallace, Paul Published: JMIR Publications Inc., 2009 Published in: Journal of Medical Internet Research Extent: e9 Language: English DOI: 10.2196/jmir.1052 ISSN: 1438-8871 Keywords: Health Informatics Footnote: Access State: Open Access