Affiliation: | 1. Department of Periodontics, East Carolina University, Greenville, NC, USAThese authors contributed equally to this research.;2. Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas, Houston, TX, USA;3. Department of Diagnostics and Biomedical Sciences, School of Dentistry, University of Texas, Houston, TX, USA;4. Human Genetics Center, Division of Biostatistics, School of Public Health, University of Texas, Houston, TX, USA |