| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
|---|---|
| AERP | antegrade effective refractory period; atrial effective refractory period |
| ESP | early systolic paradox; echo spacing; effective sensory projection; effective systolic pressure; end... |
| MEC | median effective concentration; middle ear canal; middle ear cell; minimum effective concentration |
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |