| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
|---|---|
| HCT | health check test; hematocrit; historic control trial; homocytotrophic; human calcitonin; hydrochlor... |
| HCTZ | hydrochlorothiazide |
| HHR | hydralazine, hydrochlorothiazide, and reserpine |
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |