ICH Topic Q1D Bracketing AND Matrixing Designs Stability Testing Drug Substances AND Drug Products
TGA (CWLTH) resource. Rules Mate indexes this as part of the Australian compliance corpus. Click through for the regulator's primary source.
https://www.tga.gov.au/resources/resources/international-scientific-guidelines-adopted-australia/ich-topic-q1d-bracketing-and-matrixing-designs-stability-testing-drug-substances-and-drug-products
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