| OAP | Office of Adolescent Pregnancy; old age pension, old age pensioner; ophthalmic artery pressure; oste... |
|---|---|
| OAPP | Office of Adolescent Pregnancy Programs |
| SBAHC | school-based adolescent health care |
| ERF | Education and Research Foundation; external rotation in flexion; Eye Research Foundation |
| ICR | [distance between] iliac crests; Institute for Cancer Research; Institute for Cancer Research [mouse... |