| OSA | obstructive sleep apnea; Office of Services to the Aging; Optical Society of America; ovarian sectio... |
|---|---|
| PCA | para-chloramphetamine; parietal cell antibody; passive cutaneous anaphylaxis; patient care assistant... |
| POA | pancreatic oncofetal antigen; phalangeal osteoarthritis; preoptic area; primary optic atrophy |
| POA-HA | preoptic anterior hypothalamic area |
| PVA | Paralyzed Veterans of America; peripheral venous alimentation; polyvinyl acetate; polyvinyl alcohol;... |