1. Department of Restorative Dentistry, College of Dentistry, University of Illinois Chicago, 801 S. Paulina St, Chicago, IL 60612, USA
2. Department of Periodontics, College of Dentistry and Dental Clinics, University of Iowa, 801 Newton Rd, Iowa City, IA 52242, USA
3. Advance Standing Dental Degree Program, Department of Restorative Dentistry, College of Dentistry, University of Illinois Chicago, 801 S. Paulina St, Chicago, IL 60612, USA
4. Predoctoral Implant Program, Department of Restorative Dentistry, College of Dentistry, University of Illinois Chicago, 801 S. Paulina St, Chicago, IL 60612, USA