| ESPA | electrical stimulation-produced analgesia |
|---|---|
| ETS | educational testing service; electrical transcranial stimulation |
| FES | family environment scale; fat embolism syndrome; flame emission spectroscopy; forced expiratory spir... |
| FNS | frontier nursing service; functional neuromuscular stimulation |
| FS | factor of safety; Fanconi syndrome; Felty syndrome; fibromyalgia syndrome; field stimulation; Fisher... |