1. Bioreactor Group, Berlin‐Brandenburg Center for Regenerative Therapies (BCRT)Charité—Universitätsmedizin Berlin Berlin Germany
2. Department of Surgery, Keck School of MedicineUniversity of Southern California Los Angeles CA USA
3. Stem Cell Systems GmbH Berlin Germany
4. Tissue Engineering, Berlin‐Brandenburg Center for Regenerative Therapies (BCRT)Charité—Universitätsmedizin Berlin Berlin Germany
5. Division of Biotechnology, IFMLinköping University Linköping Sweden