| NF | nafcillin; National Formulary; nephritic factor; neurofibromatosis; neurofilament; neutral fraction;... |
|---|---|
| NI | neuraminidase inhibition; neurological improvement; neutralization index; no information; noise inde... |
| NIHL | noise-induced hearing loss |
| NIPTS | noise-induced permanent threshold shift |
| NNI | noise and number index |