| ADLs | Activities of Daily Living |
| ASD | Autism Spectrum Disorder |
| CdLS | Cornelia de Lange Syndrome |
| DS | Down Syndrome |
| ID | Intellectual Disability |
| NDD | Neurodevelopmental Disorder |
| PACS1 | Phosphofurin Acidic Cluster Sorting protein 1 |
| QoL | Quality of Life |
| QoLI | Quality of Life Index |
| SD | Standard Deviation |
| SHS | Schuurs-Hoeijmakers Syndrome |
| WS | Williams Syndrome |
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