Distribution of haplotypes from a chromosome 21 region distinguishes multiple prehistoric human migrations.
Jin L, Underhill PA, Doctor V, Davis RW, Shen P, Cavalli-Sforza LL, Oefner PJ. Distribution of haplotypes from a chromosome 21 region distinguishes multiple prehistoric human migrations. Proc Natl Acad Sci U S A. 1999 Mar 30; 96(7):3796-800.