About the Authors

Sriram Sankararaman

sankararaman@genetics.med.harvard.edu (SS); paabo@eva.mpg.de (SP); reich@genetics.med.harvard.edu (DR)

Affiliations Department of Genetics, Harvard Medical School, Boston, Massachusetts, United States of America, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America

Nick Patterson

Affiliation Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America

Heng Li

Affiliation Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America

Svante Pääbo

sankararaman@genetics.med.harvard.edu (SS); paabo@eva.mpg.de (SP); reich@genetics.med.harvard.edu (DR)

Affiliation Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany

David Reich

sankararaman@genetics.med.harvard.edu (SS); paabo@eva.mpg.de (SP); reich@genetics.med.harvard.edu (DR)

Affiliations Department of Genetics, Harvard Medical School, Boston, Massachusetts, United States of America, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SS NP SP DR. Performed the experiments: SS NP HL . Analyzed the data: SS NP HL DR. Contributed reagents/materials/analysis tools: SS NP HL. Wrote the paper: SS SP DR.