美国疾病控制及预防中心 (统计中心)
Centers for Disease Control and Prevention (Statistic Center)
http://www.cdc.gov/hiv/statistics/index.html

CDC’S National HIV Surveillance System is the primary source for monitoring HIV trends in the United States. CDC funds and assists state and local health departments to collect the information. Health departments report de-identified data to CDC so that information from around the country can be analyzed to determine who is being affected and why.
美国心理学会
American Psychological Association (APA)
http://www.apa.org/
美国传统基金会
The Heritage Foundation
http://www.heritage.org/