1. Department of Prosthetic Dentistry/Dental Materials Science; Institute of Odontology; University of Gothenburg; Gothenburg Sweden
2. Laboratory for Redox Regulation; Tohoku University Graduate School of Dentistry; Sendai Japan
3. Division of Molecular and Regenerative Prosthodontics; Tohoku University Graduate School of Dentistry; Sendai Japan
4. Liaison Center for Innovative Dentistry; Tohoku University Graduate School of Dentistry; Sendai Japan
5. Department of Clinical Dentistry/Faculty of Health Sciences; The Arctic University of Norway; Tromsø Norway