1. Department of Psychology West Virginia University Morgantown West Virginia USA
2. Center for Oral Health Research in Appalachia University of Pittsburgh & West Virginia University Pittsburgh, Pennsylvania & Morgantown, West Virginia USA
3. Department of Epidemiology and Biostatistics West Virginia University Morgantown West Virginia USA
4. Department of Human Genetics, School of Public Health & Center for Craniofacial and Dental Genetics, School of Dental Medicine University of Pittsburgh Pittsburgh Pennsylvania USA
5. Center for Molecular and Clinical Epidemiology of Infectious Diseases & Department of Epidemiology, School of Public Health University of Michigan Ann Arbor Michigan USA
6. Clinical and Translational Sciences, School of Medicine University of Pittsburgh Pittsburgh Pennsylvania USA
7. Department of Community Dentistry and Behavioral Science University of Florida College of Dentistry Gainesville Florida USA