1. Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana.
2. Department of Oral and Maxillofacial Surgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana.
3. Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missori.
4. Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missori.
5. Department of Microbiology and Immunology, Louisiana State University Health Sciences Center, Shreveport, Louisiana.
6. Department of School of Biological Sciences, Louisiana Tech University, Ruston, Louisiana.