| SOB | Stool occult blood |
|---|---|
| CBF | capillary blood flow; cerebral blood flow; ciliary beat frequency; coronary blood flow; cortical blo... |
| HBF | hand blood flow; hemispheric blood flow; hemoglobinuric bilious fever; hepatic blood flow; hypothala... |
| AOIVM | angiographically occult intracranial vascular malformation |
| OPM | occult primary malignancy; Office of Personnel Management; ophthalmoplegic migraine |