Quandt, Sara A., Spangler, John G., Case, L. Douglas, Bell, Ronny A., Belflower, Amy E. "Smokeless tobacco use accelerates age-related loss of bone mineral density among older women in a multi-ethnic rural community." Journal of Cross-Cultural Gerontology, Vol 20(2), Jun. 2005. pp. 109-125.
Linton, Druenell E. "Cardiovascular risk factors and events in the Lumbee Native Americans of North Carolina." Journal of the American College of Cardiology (JACC) 47.4 (2006): 167A. June 4, 2006.