(The American Journal of Human Genetics 98, 789–795; April 7, 2016)
In the original version of this article published on April 7, 2016, glutamine was inadvertently abbreviated as Glu instead of Gln throughout the paper. Additionally, in the Figure 1 legend, the age of participant 16, who was 3.75 months old at the time of the study, should have been 4 months (instead of 3) to be consistent with the age reported in Table 1. These errors have been corrected online, and the authors apologize for the oversight.