Homburger JR, Moreno-Estrada A, Gignoux CR, Nelson D, Sanchez E, Ortiz-Tello P, Pons-Estel BA, Acevedo-Vasquez E, Miranda P, Langefeld CD, Gravel S, Alarcón-Riquelme ME, Bustamante CD. Genomic Insights into the Ancestry and Demographic History of South America. PLoS Genet. 2015 Dec; 11(12):e1005602.