| Abbreviations | Meaning |
 | US1 | Usher Syndrome Type I |
| SLO | Smith-Lemli-Opitz Syndrome |
| BSS | Bernard-Soulier Syndrome |
| PVFS | Postviral Fatigue Syndrome |
| ONMRS | Onychotrichodysplasia-neutropenia-mental Retardation Syndrome |
| DGSCR | DiGeorge Syndrome Critical Region |
| SMDS | Secondary Myelodysplastic Syndrome; Switched Multimegabit Data Service |
| PES | Primary Empty Sella [syndrome] |
| FRNS | Fryns Syndrome |
| NKHS | Nonketotic Hyperosmolar Syndrome; Normal Krebs-Henseleit Solution |
| TS | Toxic Syndrome |
| ZO | Zichen-Oppenheim [syndrome]; Zonula Occludens; Zuelzer-Ogden [syndrome] |
| SRPS | Short Rib-polydactyly Syndrome |
| ITFS | Iliotibial Tract Friction Syndrome; Incomplete Testicular Feminization Syndrome |
| HHE | Health Hazard Evaluation; Hemiconvulsion-hemiplegia-epilepsy [syndrome]; Hypotonic Hyporesponsive Episode |
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