Uptodate.com is a comprehensive evidence-based clinical information resource available to clinicians on the Web, desktop, and PDA. It is designed to get clinicians the concise, practical answers they need when they need them the most. Topics are written exclusively by clinicians for clinicians. The content is comprehensive yet concise and it’s fully referenced. It goes through an extensive peer review process to ensure that the information and recommendations you access from this service are accurate and reliable. In order to have access to this service, you have to subscribe and pay.