| OC | obstetrical conjugate; occlusocervical; office call; on call; only child; optic chiasma; oral contra... |
|---|---|
| OCD | obsessive compulsive disorder; Office of Child Development; Office of Civil Defense; osteochondritis... |
| PAC | papular acrodermatitis of childhood; parent-adult-child; pericarditis-arthropathy-camptodactyly [syn... |
| PBLC | peripheral blood lymphocyte count; premature birth living child; problem-based learning curriculum |
| SCAN | suspected child abuse and neglect; systolic coronary artery narrowing |