| OPD | obstetric prediabetic; optical path difference; otopalatodigital [syndrome]; outpatient department; ... |
|---|---|
| PID | pain intensity difference [score]; pelvic inflammatory disease; photoionization detector; picture im... |
| PLSD | protected least significant difference |
| PPID | peak pain intensity difference [score] |
| RD | radial deviation; radiology department; rate difference; Raynaud disease; reaction of degeneration; ... |