1. Assistant professor of oral diagnosis, medicine, and radiology, Louisiana State University School of Dentistry, US.
2. Associate professor of pathology and oral pathology, Louisiana State University Schools of Dentistry and Medicine, US.
3. Associate professor of dental diagnostic science, Department of Dental Diagnostic Science, University of Texas Health Science Center at San Antonio Dental School, 7703 Floyd Curl Dr. San Antonio, TX 78284, US.
4. Professor of general dentistry, Louisiana State University School of Dentistry, US.