| OR | a logical binary relation that is true if any argument is true, and false otherwise; [o]estrogen rec... |
|---|---|
| PPR | physician-patient relation; physician payment reform; posterior primary ramus; Price precipitation r... |
| AIDS | Acquired Immuno(Immune)-Deficiency Syndrome; 후천성 면역 결핍 증후군 |
| AISA | Acquired Idiopathic Sideroblastic Anemia = RARS |
| AAA | abdominal aortic aneurysm/aneurysmectomy; acne-associated arthritis; acquired aplastic anemia; acute... |