1. Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London WC2A 3LY, UK
2. Central University Hospital of Asturias (HUCA) and Institute of Oncology of Asturias (IUOPA), 33011 Oviedo, Spain
3. Complutense University of Madrid, 28040 Madrid, Spain
4. Orthopaedic Pathophysiology and Regenerative Medicine Unit, Rizzoli Orthopaedic Institute, 40136 Bologna, Italy
5. Department of Biomedical and Neuromotor Sciences, University of Bologna, 40123 Bologna, Italy
6. Cellular Biotechnology Laboratory, Institute of Health Carlos III (ISCIII), Majadahonda, 28220 Madrid, Spain