A book cover for Effect of Simvastatin on Cognitive Functioning in Children With Neurofibromatosis Type 1 / Moderate-to-Vigorous Physical Activity From Ages 9 to 15 Years / African American Physicians and Organized Medicine, 1846-1968: Origins of a Racial Divide (JAMA: The Journal of the American Mediacl Association, Volume 300, Number 3, July 16, 2008); L. C. Krab; Health, Fitness & Dieting;