| OSA | obstructive sleep apnea; Office of Services to the Aging; Optical Society of America; ovarian sectio... |
|---|---|
| OSAS | obstructive sleep apnea syndrome |
| PVOD | pulmonary vascular obstructive disease; pulmonary veno-occlusive disease |
| ROAD | reversible obstructive airways disease |
| CHARGE | coloboma, heart disease, atresia choanae, retarded growth and retarded development and/or CNS anomal... |