1. Jane and Jerry Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, Biomaterials and Hospital Dentistry, UCLA School of Dentistry, Los Angeles, California.
2. Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan.
3. Department of Bioengineering, UCLA Henry Samueli School of Engineering and Applied Science, Los Angeles, California.
4. Laboratory of Regenerative Bioengineering and Repair, Division of Plastic Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California.