1. Center for Anatomical Sciences, University of North Texas Health Science Center; 3500 Camp Bowie Boulevard Fort Worth TX 76107 USA
2. Department of Pathology and Anatomical Sciences; University of Missouri; M263 Medical Sciences Building Columbia MO 65212 USA
3. Department of Anatomy; Des Moines University; 3200 Grand Avenue Des Moines IA 50312 USA
4. Department of Sociology and Anthropology; Metropolitan State University of Denver; Campus Box 28, P.O. Box 173362 Denver CO 80217 USA
5. Department of Anthropology, University of Iowa; 114 Macbride Hall Iowa City IA 52242 USA
6. Department of Orthodontics; University of Iowa; 114 Macbride Hall Iowa City IA 52242 USA