Affiliation: | 1. Division of Maxillofacial Prosthodontics Hospital Dentistry Institute, University of Iowa Hospitals & Clinics, Iowa City, IA, USA;2. Center for Dental Research, Loma Linda University School of Dentistry, Loma Linda, CA, USA;3. Division of Biostatistics and Research Design, University of Iowa College of Dentistry & Dental Clinics, Iowa City, IA, USA;4. Department of Prosthodontics, University of Iowa College of Dentistry & Dental Clinics, Iowa City, IA, USA |