1. Faculty of Dental Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
2. Faculty of Physics, ”Alexandru Ioan Cuza” University of Iasi, 700506 Iasi, Romania
3. Faculty of Material Science and Engineering, “Gheorghe Asachi” University of Iasi, 700050 Iasi, Romania
4. Department of Physics, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania
5. Department of Biophysics and Medical Physics, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
6. Romanian Scientists Academy, 54 Splaiul Independentei, 050094 Bucharest, Romania