| Abbreviations | Meaning |
 | MRXA | X-linked Mental Retardation-aphasia Syndrome |
| FS | Fanconi Syndrome |
| CS | Climacteric Syndrome |
| BLS | Bloom Syndrome |
| OUS | Overuse Syndrome |
| PAWS | Primary Withdrawal Syndrome |
| GEMSS | Glaucoma-lens Ectopia-microspherophakia-stiffness-shortness Syndrome |
| KBS | Klüver-Bucy Syndrome; Knowledge-based System |
| ADS | Anatomical Dead Space; Anonymous Donor's Sperm; Antibody Deficiency Syndrome; Antidiuretic Substance; Army Dental Service |
| WC | Weber-Christian [syndrome] |
| BWS | Beckwith-Wiedemann Syndrome |
| ICTS | Idiopathic Carpal Tunnel Syndrome |
| RSS | Russell-Silver Syndrome |
| AHA | Anti-heart Antibody; Antihistone Antibody; Area Health Authority; Arthritis-hives-angioedema [syndrome]; Aspartyl-hydroxamic Acid; Autoimmune Hemolytic Anemia |
| KL | Karhunen-Loeve [transform]; Kidney Lobe; Kit Ligand; Klebs-Loeffler [bacillus]; Kleine-Levin [syndrome] |
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