Useful Links

1. Physcian Guide to Lab test selection and  Interpretation:    http://www.arupconsult.com/Algorithms/or.html
2. http://ourmedical.net/
3. Clinical practice guideline: http://www.ahrq.gov/clinic/cpgarchv.htm
4. USPSTF guidelines:  http://www.uspreventiveservicestaskforce.org/uspstopics.htm