1. National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), 9000 Rockville Pike Building 50, Room 4120, Bethesda, MD 20892, USA
2. Department of Periodontics, University of Texas Health Science Center at San Antonio, TX 78229, USA
3. Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI 48105, USA
4. Department of Periodontics, Virginia Commonwealth University School of Dentistry, Richmond, VA 23298, USA
5. Department of Periodontics, University of Washington School of Dentistry, Seattle, WA 98195, USA
6. Department of Endodontics, University of Washington School of Dentistry, Seattle, WA 98195, USA