| PASM | periodic acid-silver methenamine |
|---|---|
| PA-T-SP | periodic acid-thiocarbo-hydrazide-silver proteinate |
| RSS | rat stomach strip; rectosigmoidoscopy; Russell-Silver syndrome |
| SDS | same day surgery; school dental services; self-rating depression scale; sensory deprivation syndrome... |
| SRS | schizophrenic residual state; sex reassignment surgery; Silver-Russell syndrome; simple repeat seque... |