Trivanović, Drenka, 1. Group for Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Doktora Subotića 4, 11129 Belgrade, Serbia; 2. IZKF Research Group for Tissue Regeneration in Musculoskeletal Diseases, University Clinics, Würzburg, Germany; 3. Bernhard-Heine-Center for Locomotion Research, University Würzburg, Germany, Serbia