AUTHOR CONTRIBUTIONS
The fieldwork was carried out by HJ. DS, SLL and AH. AKN and HJ
developed the pedigree. DS carried out genetic assignment. DS and SLL
performed the statistical analyses and interpreted the results with
input from AKN, DG, SM and HJ. DS drafted the initial version of the
manuscript with input from SLL, DG, AKN, SM and HJ. All authors
contributed to later versions of the manuscript, and all authors gave
final approval for publication.