1. Institute of Dentistry University of Eastern Finland Kuopio Finland
2. Department of Dentistry and Oral Health Aarhus University Aarhus Denmark
3. Seqiz Health Network Kurdistan University of Medical Sciences Seqiz Kurdistan Iran
4. Department of Health Research Methods, Evidence and Impact McMaster University Hamilton Ontario Canada
5. Department of Conservative Dentistry and Oral Health Riga Stradins University Riga Latvia
6. School of Dentistry Universidad Austral de Chile Valdivia Chile
7. Baltic Biomaterials Centre of Excellence Headquarters at Riga Technical University Riga Latvia