| NPA-NIHHDP | National Pituitary Agency-National Institutes of Health Hormone Distribution Program |
|---|---|
| NRC | National Research Council; National Response Center; normal retinal correspondence; not routine care... |
| NRCC | National Registry in Clinical Chemistry; National Research Council of Canada |
| AAAI | American Academy of Allergy and Immunology |
| AACP | American Academy of Cerebral Palsy; American Association of Colleges of Pharmacy |