About the Authors
Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
National Research Center Frontiers in Genetics, University of Lausanne, Lausanne, Switzerland
The authors have declared that no competing interests exist.
WW proposed the study, and DB, WW, and HK conceived it. DB and HK designed the analyses. DB performed and HK guided the analyses. DB, WW, and HK cowrote the manuscript.