Corrigendum to "Therapeutic Potential of Olfactory Ensheathing Cells and Mesenchymal Stem Cells in Spinal Cord Injuries" - Anna Zadroga; Katarzyna Jezierska-Woźniak; Joanna Czarzasta; Monika Barczewska; Joanna Wojtkiewicz; Wojciech Maksymowicz (Hindawi Limited, 2017)