| SAO | small airway obstruction; splanchnic artery occlusion; subvalvular aortic obstruction |
|---|---|
| SAS | sarcoma amplified sequence; self-rating anxiety scale; short arm splint; Sklar Aphasia Scale; sleep ... |
| TAR | thoracic aortic rupture; thrombocytopenia with absent radii [syndrome]; tissue-air ratio; total abor... |