The main function is doppelgangR(), which takes as minimal input a list of ExpressionSet object, and searches all list pairs for duplicated samples. The search is based on the genomic data (exprs(eset)), phenotype/clinical data (pData(eset)), and "smoking guns" - supposedly unique identifiers found in pData(eset).
The DESCRIPTION file:
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Levi Waldron, Markus Riester, Marcel Ramos
Maintainer: Levi Waldron <email@example.com>