| Affiliation: | 1. Department of Preventive and Community Dentistry, College of Dentistry, Public Policy Center, University of Iowa, , Iowa City, IA, USA;2. Public Policy Center, University of Iowa, , Iowa City, IA, USA;3. Department of Preventive and Community Dentistry, College of Dentistry, University of Iowa, , Iowa City, IA, USA;4. Urban and Regional Planning, Department of Civil and Environmental Engineering, Public Policy Center, University of Iowa, , Iowa City, IA, USA;5. Department of Biostatistics, College of Public Health, University of Iowa, , Iowa City, IA, USA |
