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Number of relations between congenital heart defects (CHD) and currently managed features
| Features | CHD |
|---|---|
| Genes | 193 |
| Linkage regions | 14 |
| Balanced chromosomal aberrations | 21 |
| Van Karnebeek and Hennekam 1999 regions | 85 |
| Patients | 281 |
| Studies (mutation screens) | 297 |
| Mutations | 284 |
