1. School of Dentistry The University of Texas Health Science Center at Houston Houston Texas USA
2. Department of Diagnostic and Biomedical Sciences, The University of Texas Health Science Center at Houston School of Dentistry Houston Texas USA
3. SIMS Laboratory, Shared Equipment Authority Rice University Houston Texas USA
4. Office of Research, The University of Texas Health Science Center at Houston School of Dentistry Houston Texas USA
5. Department of Endodontics, The University of Texas Health Science Center at Houston School of Dentistry Houston Texas USA