National Institutes of Health (NIH) An agency of the US Department of Health and Human Services. It is one of the world's foremost medical research centers and the Federal focal point for health research. As the steward of biomedical and behavioral research for the Nation, its mission is science in pursuit of fundamental knowledge about the nature and behavior of living systems and the application of that knowledge to extend healthy life and reduce the burdens of illness and disability. USDHHS. US. http://www.nih.gov
National League for Nursing. The accrediting body for nursing education programs: Site provides nursing testing and exams, books, continuing education, achievement exams, and diagnostic readiness tests. http://www.nln.org/