| NCA | National Certification Agency; National Council on Aging; National Council on Alcoholism; neurocircu... |
|---|---|
| NHA | National Health Association; National Hearing Association; National Hemophilia Association; nonspeci... |
| NPF | nasopharyngeal fiberscope; National Parkinson Foundation; National Pharmaceutical Foundation; Nation... |
| HII | Health Industries Institute; Health Insurance Institute; hemagglutination inhibitor immunoassay |
| IAM | Institute of Applied Microbiology [Japan]; Institute of Aviation Medicine; internal auditory meatus |