| PIDS | primary immunodeficiency syn-drome |
|---|---|
| PIS | preinfarction syndrome; primary immunodeficiency syndrome; Provisional International Standard |
| SAIDS | sexually acquired immunodeficiency syndrome; simian acquired immune deficiency syndrome |
| SCID | severe combined immunodeficiency [syndrome]; soft copy image display; Structured Clinical Interview ... |
| SCIDS | severe combined immunodeficiency syndrome |