About the Authors

Susan E Ptak, Amy D Roeder, Yoav Gilad, Svante Pääbo, Molly Przeworski
Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany

Matthew Stephens
Department of Statistics, University of Washington, Seattle, Washington, United States of America

Corresponding Author

Molly_Przeworski@ Brown.edu

Competing Interests

The authors have declared that no conflicts of interest exist.

Author Contributions

MP conceived and designed the experiments. ADR and YG performed the experiments. SEP, MS, and MP analyzed the data. MS, SP, and MP contributed reagents/materials/analysis tools. All authors contributed to the writing of the paper.