| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
|---|---|
| LBP | lipopolysaccharide-binding protein; low back pain; low blood pressure; lumbar back pain |
| LBS | low back syndrome; lumbar back strain |
| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |
| OET | oral endotracheal tube; oral esophageal tube |