1 Case Western Reserve University School of Dentistry, Cleveland, Ohio.
2 Faculty of Dentistry University of Toronto, Toronto, Ontario, Canada.
3 University of Alabama at Birmingham, Birmingham, Alabama.
4 Texas A&M College of Dentistry, College Station, Texas.
5 Columbia University College of Dental Medicine, New York, New York.
6 Department of Oral and Craniofacial Sciences, Center for Craniofacial and Dental Genetics, University of Pittsburgh, School of Dental Medicine, Pittsburgh, Pennsylvania.
7 Private Practice Durham NC, Durham, North Carolina.
8 University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania.
9 The Dental College of Georgia, Augusta University, Augusta, Georgia.
10 University of Texas Health San Antonio School of Dentistry, San Antonio, Texas. Electronic address: Hargreaves@UTHSCSA.edu.