| FS | factor of safety; Fanconi syndrome; Felty syndrome; fibromyalgia syndrome; field stimulation; Fisher... |
|---|---|
| FSU | family service unit; functional spine unit |
| FSW | field service worker |
| GMS | General Medical Service; geriatric mental state; Gilbert-Meulengracht syndrome; Gomori methenamine s... |
| HERS | Health Evaluation and Referral Service; hemorrhagic fever with renal syndrome |