| DU | decubitus ulcer; density unknown; deoxyuridine; dermal ulcer; diagnosis undetermined; diazouracil; d... |
|---|---|
| GU | gastric ulcer; genitourinary; glucose uptake; glycogenic unit; gonococcal urethritis; gravitational ... |
| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
| ROU | recurrent oral ulcer |
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |