1. Department of Integrative Biology and Physiology University of Minnesota Medical School Minneapolis Minnesota USA
2. Craniofacial Research Center, Department of Pathology and Anatomical Sciences University of Missouri School of Medicine Columbia Missouri USA
3. Department of Orthopaedic Surgery University of Missouri School of Medicine Columbia Missouri USA
4. Department of Biology Western Oregon University Monmouth Oregon USA
5. Department of Anthropology University of Minnesota Minneapolis Minnesota USA
6. Department of Orthodontics, Arthur A. Dugoni School of Dentistry University of the Pacific San Francisco California USA
7. Department of Orthodontics, School of Dental Medicine Case Western Reserve University Cleveland Ohio USA