| HAD | health care alternatives development; hemadsorption; hospital administration, hospital administrator... |
|---|---|
| HAd | hemadsorption; hospital administrator |
| MRA | magnetic resonance angiography; main renal artery; marrow repopulation activity; medical record anal... |
| NA | Avogadro constant or number; nalidixic acid; Narcotics Anonymous; network administrator; neuraminida... |
| NHA | National Health Association; National Hearing Association; National Hemophilia Association; nonspeci... |