Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2008 Apr 16;10(2):e10. doi: 10.2196/jmir.956

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© Wendy Brouwer, Anke Oenema, Rik Crutzen, Jascha de Nooijer, Nanne K de Vries, Johannes Brug. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 16.04.2008. Except where otherwise noted, articles published in the Journal of Medical Internet Research are distributed under the terms of the Creative Commons Attribution License (http://www.creativecommons.org/licenses/by/2.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 1) the original work is properly cited, including full bibliographic details and the original article URL on www.jmir.org, and 2) this statement is included.

PMC Copyright notice

jmir_v10i2e10_app1.pdf^{(105.7KB, pdf)}