1. Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga LV-1007, Latvia
2. Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga LV-1048, Latvia
3. Medical University of Innsbruck, Innsbruck 6020, Austria