1. Department of Otorhinolaryngology Head and Neck Surgery Hannover Medical School Hannover Germany
2. Department of Otolaryngology, Head and Neck Surgery University of Kansas School of Medicine Kansas City Kansas
3. Institute of Experimental and Clinical Cell Therapy Spinal Cord Injury and Tissue Regeneration Centre Salzburg (SCI‐TReCS) Paracelsus Medical University Salzburg Austria
4. Institute of Experimental Neuroregeneration Spinal Cord Injury and Tissue Regeneration Centre Salzburg (SCI‐TReCS) Paracelsus Medical University Salzburg Austria
5. Austrian Cluster for Tissue Regeneration Vienna Austria
6. GMP Unit, Spinal Cord Injury and Tissue Regeneration Centre Salzburg (SCI‐TReCS) Paracelsus Medical University (PMU) Salzburg Austria
7. Research Program “Nanovesicular Therapies,” Paracelsus Medical University (PMU) Salzburg Austria
8. Institute of Molecular and Cellular Pharmacology Medical University of Innsbruck Innsbruck Austria
9. Institute of Cellular Therapeutics Hannover Medical School and Clinical Immunology University Leipzig, Fraunhofer Institute for Cell Therapy and Immunology Leipzig Germany
10. Department of Transfusion Medicine University Hospital Salzburger Landeskliniken GesmbH (SALK) and Paracelsus Medical University (PMU) Salzburg Austria
11. Institute of Transplant Immunology Hannover Medical School Hannover Germany