| COCP | combined oral contraceptive pill |
|---|---|
| COGTT | cortisone oral glucose tolerance test |
| COS | cheiro-oral syndrome; chief of staff; Clinical Orthopaedic Society; clinically observed seizures |
| IAOM | International Association of Oral Myology |
| KB | human oral epidermoid carcinoma cells; Kashin-Bek [disease]; ketone body; kilobyte; Kleihauer-Betke ... |
| OFDS | Oral-Facial-Digital syndromes |
|---|---|
| ROU | Recurrent oral ulcer |
| TOPV | Trivalent oral poliovaccine |
| PO | per oral |