| GAPO | growth retardation, alopecia, pseudo-anodontia, and optic atrophy [syndrome] |
|---|---|
| LOA | leave of absence; Leber optic atrophy; left occipitoanterior [fetal position] |
| OA | obstructive apnea; occipital artery; occipito-anterior; occiput anterior; octanoic acid; ocular albi... |
| OAK | Kjer optic atrophy |
| POA | pancreatic oncofetal antigen; phalangeal osteoarthritis; preoptic area; primary optic atrophy |