Identification of concepts of importance for the assessment of internal validity of in vitro toxicology studies using a modified Delphi technique

Gro H. Mathisen, Camilla Svendsen, Gunn E. Vist, Trine Husøy, Heather M. Ames, Angela Bearth, Marc Audebert, Annette Bernhard, Anna Beronius, Ellen M. Bruzell, Emma Di Consiglio, Miles Davenport, Ingrid Druwe René Geci, Ursula Gundert-Remy, Thomas Hartung, Sebastian Hoffmann, Helena T. Hogberg, Carlijn R. Hooijmans, Lucina E. Lizarraga, Jennifer H. Olker, Pilar Prieto, Joshua F. Robinson, Andrew A. Rooney, Adriano Sebollela, Nicola M. Smith, Eliana Spilioti, Anastasia Spyropoulou, Olga Tcheremenskaia, Emanuela Testai, Amy Wang, Erin Yost, Johanna Zilliacus, Paul Whaley