1. Department of Integrated Dentistry, Medical University of Bialystok, Bialystok, Poland
2. Department of Integrated Dentistry, Poznan University of Medical Sciences, Poznan, Poland
3. Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
4. Department of Comprehensive Dentistry, School of Dentistry, University of Texas Health San Antonio, San Antonio, TX, USA
5. Bionics and Materials Development, Hamm-Lippstadt University of Applied Sciences, Hamm, Germany
6. Research Department, Dr. Kurt Wolff GmbH & Co. KG, Bielefeld, Germany