| URT | Upper Respiratory Tract |
|---|---|
| UTI | Urinary Tract Infection; 비뇨기계 감염 |
| AOT | accessory optic tract; Anderson Olsson table; anodal opening tetanus; Association of Occupational Th... |
| AST | allergy serum transfer; angiotensin sensitivity test; anterior spinothalamic tract; antistreptolysin... |
| BTD | biliary tract disease |