| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
|---|---|
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |
| APCC | aspirin-phenacetin-caffeine-codeine |
| COD | cause of death; cerebro-ocular dysplasia; chemical oxygen demand; codeine; condition on discharge |
| cod | codeine |