1 Department of Cell Biology, Radboud University Medical Centre, Nijmegen, The Netherlands. Katarina.Wolf@radboudumc.nl.
2 Department of Cell Biology, Radboud University Medical Centre, Nijmegen, The Netherlands. Peter.Friedl@radboudumc.nl.
3 David H. Koch Center for Applied Research of Genitourinary Cancers, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA. Peter.Friedl@radboudumc.nl.
4 Cancer Genomics Center, Utrecht, The Netherlands. Peter.Friedl@radboudumc.nl.