1. Biomedical Engineering Program, Middle East Technical University, Ankara 06800, Turkey
2. Department of Biomedical Engineering, Isparta University of Applied Science, Isparta 32260, Turkey
3. Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara 06800, Turkey
4. BIOMATEN, METU Center of Excellence in Biomaterials and Tissue Engineering, Ankara 06800, Turkey