| HII | Health Industries Institute; Health Insurance Institute; hemagglutination inhibitor immunoassay |
|---|---|
| IAM | Institute of Applied Microbiology [Japan]; Institute of Aviation Medicine; internal auditory meatus |
| NIA | National Institute on Aging; nephelometric inhibition assay; niacin; no information available; Nutri... |
| CAPRI | Cardiopulmonary Research Institute |
| ECRI | Emergency Care Research Institute |
| NCI-C | National Cancer Institute of Canada |
|---|---|
| NHLBI | National Heart Lung and Blood Institute |
| NIBSC | National Institute for Biological Standards and Control |
| NICE | National Institute for Clinical Excellence |
| NIOSH | National Institute for Occupational Safety and Health |