| EF | ectopic focus; edema factor; ejection fraction; elastic fibril; electric field; elongation factor; e... |
|---|---|
| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
| ABO | abortion; absent bed occupancy; American Board of Orthodontists; blood group system consisting of gr... |
| EIRnv | extra incidence rate of non-vaccinated groups |
| EIRv | extra incidence in vaccinated groups |