| NIF | negative inspiratory force; neutrophil immobilizing factor; nonintestinal fibroblast |
|---|---|
| RAFMS | Royal Air Force Medical Services |
| RCF | red cell ferritin; red cell folate; relative centrifugal field/force; ristocetin cofactor |
| USAFH | United States Air Force Hospital |
| USAFRHL | United States Air Force Radiological Health Laboratory |