| Abbreviations | Meaning |
 | DAS | Delayed Anovulatory Syndrome |
| UQS | Upper Quadrant Syndrome |
| GS | Goodpasture Syndrome |
| CASS | Cataract-alopecia-sclerodactyly Syndrome; Coding Accuracy Support System [software]; Coronary Artery Surgery Study |
| FPO | Faciopalatoosseous [syndrome]; Federation Of Prosthodontic Organizations; Freezing Point Osmometer |
| COBS | Cesarean-obtained Barrier-sustained; Chronic Organic Brain Syndrome |
| USH1 | Usher Syndrome Type I |
| CRST | Calcinosis, Raynaud Phenomenon, Sclerodactyly, Telangiectasia [syndrome]; Corrected Sinus Recovery Time |
| HIPO | Hemihypertrophy, Intestinal Web, Preauricular Skin Tag, And Congenital Corneal Opacity [syndrome]; Hospital Indicator For Physicians Orders |
| OHS | Obesity Hypoventilation Syndrome |
| CBPS | Chemical And Biological Protected Shelter; Congenital Bilateral Perisylvian Syndrome |
| ACD | Adult Celiac Disease; Advanced Care Directive; Allergic Contact Dermatitis; Alopecia-contractures-dwarfism [syndrome] |
| IAS | Infant Apnea Syndrome |
| IS | Impingement Syndrome |
| MMIH | Megacystis-microcolon-intestinal Hypoperistalsis [syndrome] |
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