1. Department of Surgical Sciences; Faculty of Dentistry; Kuwait University; Safat Kuwait
2. Department of Oral & Maxillofacial Surgery; Karolinska University Hospital; Stockholm Sweden
3. Department of Diagnostic Sciences; Faculty of Dentistry; Kuwait University; Safat Kuwait
4. Department of Biomaterials; Institute for Surgical Sciences; The Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden