| OA | obstructive apnea; occipital artery; occipito-anterior; occiput anterior; octanoic acid; ocular albi... |
|---|---|
| O&A | observation and assessment |
| OHTA | Office of Health Technology Assessment |
| OMFAQ | older Americans resources and services (OARS) multidimensional functional assessment questionnaire |
| OTA | occupational therapy assistant; Office of Technology Assessment; ornithine transaminase; orthotoluid... |