| SFD | silo filler's disease; skin-film distance; small for dates; spectral frequency distribution |
|---|---|
| SFE | slipped femoral epiphysis |
| SFEMG | single fiber electromyography |
| SFFA | serum free fatty acid |
| SFFF | sedimentation field flow fractionation |
| SFFV | spleen focus-forming virus |
| SFG | subglottic foreign body |
| SFH | schizophrenia family history; serum-free hemoglobin; stroma-free hemoglobin |
| SFI | Sexual Function Index; Social Function Index |
| SFIS | structural family interaction scale |