1. Institute for Regenerative Medicine, University of Zürich, and Department of Health Sciences and Technology, ETH Zürich, Zürich, Switzerland.
2. Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, Zürich, Switzerland.
3. Laboratory for Tissue Engineering and Stem Cell Therapy, Department of Urology, University Hospital Zürich, Zürich, Switzerland.