| OIF | observed intrinsic frequency; oil immersion field; Osteogenesis Imperfecta Foundation |
|---|---|
| PFG | peak flow gauge; pulsed-field gel electrophoresis |
| PFGE | pulsed field gel electrophoresis |
| PVF | peripheral visual field; portal venous flow; primary ventricular fibrillation |
| RCF | red cell ferritin; red cell folate; relative centrifugal field/force; ristocetin cofactor |