1. Graduate student, Department of Anthropology, University of Arizona, Tucson, AZ 85721, US.
2. Associate professor, Departments of Anthropology and Pediatrics, University of Florida, Gainesville, FL, US.
3. Chief technologist, Division of Diagnostic Ultrasound, Department of Radiology, J. Hillis Miller Health Center, University of Florida, Gainesville, FL, US.