@article{ref1,
title="Drug Testing Challenges Emerge With CBD Product Use Even "THC-free" cannabidiol products may contain trace amounts of THC",
journal="Drug Topics",
year="2022",
author="Gebhart, F.",
volume="166",
number="9",
pages="40-41",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0012-6616",
doi="",
url="http://dx.doi.org/"
}