| OS | 1) Opening Snap 2) Orthopedic(Osteo)-Surgery; 정형 외과 3) Ocu... |
|---|---|
| AAHS | American Association for Hand Surgery |
| AATS | American Association for Thoracic Surgery |
| ABOMS | American Board of Oral and Maxillofacial Surgery |
| ABSITE | American Board of Surgery In-Training Examination |