1. Biomaterials Innovation Research Center Division of Biomedical Engineering Department of Medicine Brigham and Women's Hospital Harvard Medical School Cambridge MA 02139 USA
2. Harvard‐MIT Division of Health Sciences and Technology Massachusetts Institute of Technology Cambridge MA 02139 USA
3. Stem Cell and Regenerative Medicine Division National Institute of Genetic Engineering and Biotechnology Tehran 14977‐16316 Iran
4. Department of Biomaterials Iran Polymer and Petrochemical Institute Tehran 14977‐13115 Iran
5. Department of Periodontics School of Dentistry Shahid Beheshti University of Medical Sciences Tehran 19839‐69411 Iran
6. Animal Biotechnology Department National Institute of Genetic Engineering and Biotechnology Tehran 14977‐16316 Iran
7. Department of Oral and Maxillofacial Pathology School of dentistry Shahid Beheshti University of Medical Sciences Tehran 19839‐69411 Iran
8. Department of Physics King Abdulaziz University Jeddah 21569 Saudi Arabia
9. Department of Bioindustrial Technologies College of Animal Bioscience and Technology Konkuk University Seoul 143‐701 Republic of Korea
10. Department of Chemical Engineering Northeastern University Boston MA 02115‐5000 USA