| LSI | large-scale integration; life satisfaction index; lumbar spine index |
|---|---|
| NI | neuraminidase inhibition; neurological improvement; neutralization index; no information; noise inde... |
| PEI | Patient Exit Interview; phosphate excretion index; physical efficiency index; polyethyleneimine |
| PRI | Pain Rating Index; phosphate reabsorption index; phosphoribose isomerase; placental ribonuclease inh... |
| PSI | posterior sagittal index; problem solving information; prostaglandin synthetic inhibitor; psychologi... |