1. Department of Biology; Briar Cliff University; Sioux City IA USA
2. Biomedical Sciences Department; West Virginia School of Osteopathic Medicine; Lewisburg WV USA
3. Department of Pathology Microbiology and Immunology; University of South Carolina School of Medicine; Columbia SC USA
4. Department of Biological Sciences; University of South Carolina; Columbia SC USA
5. Center for Colon Cancer Research; University of South Carolina; Columbia SC USA