1. Department of Pediatric Dentistry, School of Dentistry, Marmara University, Istanbul, Turkey
2. Department of Biostatistics and Bioinformatics, School of Medicine, Marmara University, Istanbul, Turkey
3. Dental Materials Unit, Center for Dental and Oral Medicine, Clinic for Fixed and Removable Prosthodontics and Dental Materials Science, University of Zurich, Zurich, Switzerland