1. Associate professor, Department of Anthropology, University of Illinois, 109 Davenport Hall, 607 S. Mathews, Urbana, IL 61801, US.
2. Professor, Department of Mathematics, California State University, Fullerton, CA, US.
3. Director and special projects manager, Division of Collections and Research, respectively, National Museum of Health and Medicine, Armed Forces Institute of Pathology, Washington, DC, US.