1. Department of Restorative Dentistry, School of Dentistry, University of Jordan, Amman 11942, Jordan
2. Faculty of Pharmacy and Medical Sciences, Petra University, Amman 11196, Jordan
3. Cell Therapy Center, University of Jordan, Amman 11942, Jordan
4. Oral Biology, Surgery and Biomedical Engineering, University at Buffalo, Buffalo, NY 14214, USA