NIS means National In-patient Sample in FDA
Similar to NIS
AABP - American Association of Bovine PractitionersAACR - American Association for Cancer Research
AADA - Abbreviated Antibiotic Drug Application
AAEP - American Association of Equine Practitioners
AAFCO - Association of American Feed Control Officials
AAFP - American Academy of Family Physicians
AAHA - American Animal Hospital Association
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