| NS | natural science; Neosporin; nephrosclerosis; nephrotic syndrome; nervous system; neurological surger... |
|---|---|
| PFS | patellofemoral syndrome; primary fibromyalgia syndrome; protein-free supernatant; pulmonary function... |
| PID | pain intensity difference [score]; pelvic inflammatory disease; photoionization detector; picture im... |
| PPID | peak pain intensity difference [score] |
| PRI(S) | pain rating intensity score |