Institution: | aPrivate practice, Longmont, Colo.;bAssociate professor, Department of Biostatistics, Virginia Commonwealth University School of Medicine, Richmond, Va.;cProfessor and chairman, Department of Orthodontics, Virginia Commonwealth University School of Dentistry, Richmond, Va;dProfessor and chairman emeritus, Department of Oral and Maxillofacial Surgery, Virginia Commonwealth University School of Dentistry, Richmond, Va. |