and sample ancestry. For example, a genomewide significant linkage in bin 20.3 (20q13.12–q13.32) was identified, and the adjacent bin 20.2 (20p12.1–q13.12) showed suggestive linkage, providing more support for a true linkage signal in this region. Eleven regions with both PSR and POR <0.05 support that some or all of these 11 regions are likely to harbor risk loci for the MaxCigs24 trait.