| RADS | reactive airways dysfunction syndrome; retrospective assessment of drug safety |
|---|---|
| ROAD | reversible obstructive airways disease |
| LUSB | left upper scapular border; left upper sternal border |
| UE | uncertain etiology; under elbow; uninvolved epidermis; upper esophagus; upper extremity |
| URI | uniform resource identifier; upper respiratory illness; upper respiratory infection |