1. Oral and Maxillofacial Surgery, University of Pennsylvania Health System, Philadelphia, PA, USA.
2. Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland School of Dentistry, Baltimore, MD, USA.
3. Department of Oral Rehabilitation, Division of Endodontics, Medical University of South Carolina, Charleston, SC, USA.
4. Marquette University School of Dentistry, Milwaukee, WI, USA.
5. Division of Oral and Maxillofacial Surgery and Dentistry, New York Presbyterian Weill Cornell Medical Center, New York City, NY, USA.
6. Department of Prosthodontics, Marquette University School of Dentistry, Milwaukee, WI, USA.