1. Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
2. Department of Biostatistics and Computational Biology; University of Rochester; Rochester NY USA
3. University of Detroit Mercy School of Dentistry; Detroit MI USA
4. Operative Dentistry; Georgia Regents University; Augusta GA USA
5. General Dentistry Department; College of Stomatology; Peking University; Beijing China