Strong Amerind/white sex bias and a possible Sephardic contribution among the founders of a population in northwest Colombia.
Carvajal-Carmona LG, Soto ID, Pineda N, Ortíz-Barrientos D, Duque C, Ospina-Duque J, McCarthy M, Montoya P, Alvarez VM, Bedoya G, et al. Am J Hum Genet. 2000 Nov; 67(5):1287-95. Epub 2000 Oct 13.