1. Department of Urology, University Medical Centre Utrecht, Utrecht, The Netherlands.
2. Regenerative Medicine Center Utrecht, Utrecht, The Netherlands.
3. Tissue Engineering Laboratory, Bioengineering Area, Instituto Biodonostia, Hospital Universitario Donostia, San Sebastián, Spain.
4. Department of Biomedical Engineering, School of Engineering, Tecnun-University of Navarra, San Sebastián, Spain.
5. Paracelsus Medical University (PMU), Salzburg, Austria.