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Table 1 Number of affected individuals in the first-degree relatives and the corresponding families.

From: "Familial" versus "Sporadic" intellectual disability: contribution of common microdeletion and microduplication syndromes

Affected Individuals Families (%)
2 37 (36.6%)
3 36 (35.6%)
4 18 (17.8%)
5 5 (4.9%)
6 2 (1.98%)
8 2 (1.98%)
12 1 (0.99%)