Correction to: European Journal of Human Genetics (2014) 21, 673–679; doi:10.1038/ejhg.2012.215; published online 24 October 2012.

It has come to the attention of the authors that the legends for Figures 3 and 4 had been transposed. The figures with their corresponding legends appear below.

Figure 3
figure 1

Observed and expected LOD ratio for SHAVE and Average for top SNPs from meta-analysis for a subset of individuals in which all individuals had visit 1 and a randomly chosen 50% of visit 2 cases were selected among the same individuals.

Figure 4
figure 2

Expected LOD ratio between average and single visit for hypothetical datasets in which all individuals had k visits ranging from 2 to 10.