Verbatim quote · Receipt
A quote on the record
This is the receipt at the end of every superscript. The text below is a literal substring of the source document — checked mechanically, not vouched.
"Coverage failure of online opt-in panels"
Supports
Attributed assertion · Coverage failure of online opt-in panels is a likely cause of CPC under-estimation
Provenance
Byte offset 1276 · length 40 bytes
Extracted
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