Institution: | 1. Department of Prosthodontics and Dows Institute for Dental Research, College of Dentistry and Dental Clinics, University of Iowa, Iowa City, IA, USA;2. Department of Endodontics, College of Dentistry and Dental Clinics, University of Iowa, Iowa City, IA, USA;3. Department of Preventive and Community Dentistry, College of Dentistry and Dental Clinics, University of Iowa, Iowa City, IA, USA |