美国医学诊断治疗原则：Medical Guidelines

1.US Preventive Services Task Force
http://www.ahrq.gov/clinic/uspstfix.htm

2.National Guidelines Clearinghouse
http://www.guideline.gov/ 

3.MMWR Recommendations and Reports (PH policies for prevention & treatment)
http://www.cdc.gov/mmwr/mmwr_rr/rr_cvol.html

4.Task Force on Community Prevention Services
http://www.thecommunityguide.org/index.html