Editors’ note: We would like to alert our readers to a change in the data availability for this manuscript. The genotype and whole genome sequence data used in this publication were made publicly available at the time of publication through the GigaDB database at http://gigadb.org/dataset/100155. In March 2019, Nature was notified that the whole genome sequence data files have been removed from GigaDB. The genotype data files remain available at GigaDB. The whole genome sequence data was also made available in 2016 at NCBI with accession number PRJNA289433 (https://www.ncbi.nlm.nih.gov/bioproject/?term=PRJNA289433). In March 2019, Nature was notified that this dataset was subsequently withdrawn from NCBI by request of the submitter. We are currently investigating the data availability for the whole genome sequence data and will publish an update once our investigation is complete.