“Evaluation of LIAISON® C. difficile glutamate dehydrogenase and LIAISON® C. difficile toxin A and B in Copan FecalSwabTM samples in a three-step algorithm for the diagnosis of Clostridium difficile infection”, Microbiol Med, vol. 30, no. 1, Jun. 2015, doi: 10.4081/mm.2015.4953.