Köppel, René, Jürg Rentsch, Jürg Ruf, Albert Eugster, Christoph Graf, Nora Felderer, Klaus Pietsch, and Evelyn Ilg. 2014. “Results of an International Interlaboratory Trial to Determine Twelve Allergens Using Real-Time PCR- and ELISA-Based Assays”. CHIMIA 68 (10):721. https://doi.org/10.2533/chimia.2014.721.