There are multiple definitions:

1. amylase-trypsin inhibitor(English)

   • IBS, NCGS
   • Allergy, Diet
   • https://doi.org….3390/nu9111268

2. Assessment Technologies Institute(English)

   • Medical technology (assessment), Nurse / nursing, Neonatal situation, Education
   • https://doi.org…CRNR-D-19-00084