5.4±4.2). The 251 individuals within the 41 families that were genetically informative include: 77 parent-child, 212 sibling, 26 half sibling, 8 grandparent-grandchild, 151 avuncular, and 245 cousin relative pairs. Only sib, half-sib, avuncular and cousin pairs were included as being potentially genetically informative. Family structure and genotype consistency were verified and described previously (Ehlers and Wilhelmsen 2005, 2006, 2007; Ehlers et al., 2004b).
