| MLTI | mixed lymphocyte target interaction |
|---|---|
| SFIS | structural family interaction scale |
| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
| MEDPAR | Medical Provider Analysis and Review; Medicare Provider Analysis and Review |
| MRA | magnetic resonance angiography; main renal artery; marrow repopulation activity; medical record anal... |