1. Department of Human Genetics Graduate School of Public Health University of Pittsburgh Pittsburgh PA USA
2. Center for Craniofacial and Dental Genetics Department of Oral and Craniofacial Sciences School of Dental Medicine University of Pittsburgh Pittsburgh PA USA
3. Department of Biostatistics Graduate School of Public Health University of Pittsburgh Pittsburgh PA USA
4. Department of Psychology West Virginia University Morgantown WV USA
5. Department of Dental Practice and Rural Health School of Dentistry West Virginia University Morgantown WV USA
6. Department of Periodontics School of Dentistry West Virginia University Morgantown WV USA
7. Clinical and Translational Science School of Medicine University of Pittsburgh Pittsburgh PA USA
8. Department of Psychiatry School of Medicine University of Pittsburgh Pittsburgh PA USA