| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
|---|---|
| FDI | F?d?ration Dentaire Internationale = International Dental Association |
| IAA | imidazoleacetic acid; indoleacetic acid; infectious agent, arthritis; insulin autoantibody; Internat... |
| AIBS | International Association for Biological Standards |
| IACV | International Association of Cancer Victims and Friends |