| Abbreviations | Meaning |
 | MEDLARS | MEDical Literature Analysis And Retrieval System |
| FPCA | Family Planning Councils Of America |
| APOC | Asian Pacific Orthodontic Conference |
| NHA | National Health Association |
| IPA / API / IPV | International Psychoanalytical Association / Association Psychanalytique Internationale / Asociación Psicoanalitica Internacional / Internationale Psychoanalytische Vereinigung |
| PRISE | Primary Care Sharing The Evidence |
| NNIS | National Nosocomial Infection Surveillance System |
| WFO | World Federation Of Orthodontists |
| ODS | Office Of Dietary Supplements |
| NAFTNET | North American Fetal Therapy Network |
| EASE | European Association Of Science Editors |
| IEF | International Eye Foundation |
| USPSTF | U.S. Preventive Services Task Force |
| NNA | Neonatal Nurses Association |
| ACA / CAA | Association Canadienne D'Acoustique / Canadian Acoustical Association |
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