| NIRS | near-infrared spectroscopy; normal inactivated rabbit serum |
|---|---|
| NIS | nationwide impatient sample; near-infrared intracranial spectroscopy; N-iodosuccinimide; no inflamma... |
| OES | oral esophageal stethoscope; optical emission spectroscopy |
| PAS | para aminosalicylate; Parent Attitude Scale; patient administration system; patient appointments and... |
| PES | Patient Escort Service; photoelectron spectroscopy; physicians' equity services; polyethylene sulfon... |