Willis, F., Graff-Radford, N., Pinto, M., Lawson, L., Adamson, J., Epstein, D., . . . O'Brien, P. C. (2003). Apolipoprotein epsilon4 allele frequency in young Africans of Ugandan descent versus African Americans. National Medical Association.

Willis, Floyd, Neill Graff-Radford, Martin Pinto, LaShaune Lawson, Jennifer Adamson, Dawn Epstein, Francine Parfitt, Mike Hutton, och Peter C. O'Brien. Apolipoprotein Epsilon4 Allele Frequency in Young Africans of Ugandan Descent Versus African Americans. National Medical Association, 2003.

Willis, Floyd, et al. Apolipoprotein Epsilon4 Allele Frequency in Young Africans of Ugandan Descent Versus African Americans. National Medical Association, 2003.