Maintenance Notice

Due to necessary scheduled maintenance, the JMIR Publications website will be unavailable from Monday, March 11, 2019 at 4:00 PM to 4:30 PM EST. We apologize in advance for any inconvenience this may cause you.

Who will be affected?

Citing this Article

Right click to copy or hit: ctrl+c (cmd+c on mac)

Published on 10.02.10 in Vol 12, No 1 (2010): Jan-Mar

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

Tweetations for "Comparison of Trial Participants and Open Access Users of a Web-Based Physical Activity Intervention Regarding Adherence, Attrition, and Repeated Participation"

"No tweets found (yet). Tweets listed here are archived every night - for real time results search twitter.