1. Department of Anatomy; Des Moines University; Des Moines Iowa
2. College of Veterinary Medicine, Biomedical Sciences; Iowa State University; Ames Iowa
3. School of Anatomical Sciences; University of the Witwatersrand; Johannesburg Republic of South Africa
4. College of Pharmacy and Health Sciences, Drake University; Des Moines Iowa
5. Department of Anthropology and Center for the Advanced Study of Human Paleobiology; The George Washington University; Washington Washington, DC
6. Department of Public Health; Des Moines University; Des Moines Iowa
7. Institute of Computational Neuroscience; University Medical Center Hamburg-Eppendorf; Hamburg Germany
8. Department of Biology; Hokkaido University; Hokkaido Japan