1. University of Michigan, Department of Cariology, Restorative Sciences and Endodontics, Ann Arbor, MI, USA (Currently Department of Orthodontics and Pediatric Dentistry)
2. University of Detroit Mercy, School of Dentistry, Department of Restorative Dentistry, Detroit, MI, USA
3. University of São Paulo, Bauru School of Dentistry, Department of Dental Materials, Endodontics and Operative Dentistry, Brazil
4. American Dental Association Foundation, Paffenbarger Research Center, National Institute of Standards and Technology, Gaithersburg, MD, USA
5. University of Michigan, School of Dentistry, Department of Cariology, Restorative Sciences and Endodontics, Room 2345, 1100 N. University, Ann Arbor, MI 48109, USA