1. Department of Chemical Engineering; Isfahan University of Technology; Isfahan 84156-83111 Iran
2. Center for Biomedical Engineering, Department of Medicine; Brigham and Women's Hospital, Harvard Medical School; Boston Massachusetts 02139
3. Harvard- MIT Division of Health Sciences and Technology; Massachusetts Institute of Technology; Cambridge Massachusetts 02139
4. Department of Oral and Maxillofacial Pathology; School of Dentistry, Isfahan University of Medical Sciences; Isfahan 81746-73461 Iran
5. Torabinejad Dental Sciences Research Center, School of Dentistry, Isfahan University of Medical Sciences; Isfahan 81746-73461 Iran
6. Department of Anatomical Sciences; Medical School, Isfahan University of Medical Sciences; Isfahan 81746-73461 Iran