1. Laboratory of Bone and Implant Sciences (LBIS) Weintraub Center for Reconstructive Biotechnology Division of Advanced Prosthodontics; UCLA School of Dentistry; Los Angeles California
2. Department of Prosthodontics Dental School; Albert-Ludwigs University; Freiburg Germany
3. Department of Fixed Prosthodontics; Nihon University School of Dentistry; Tokyo Japan