1. Istituto di Struttura della Materia-Consiglio Nazionale delle Ricerche (CNR-ISM), Via del Fosso del Cavaliere, 100-00133 Rome, Italy
2. Biomaterials Group, Materials Science and Engineering Faculty, University Politehnica of Bucharest, Splaiul Independentei 313, Building J, Room JK109, Sector 6, 060032 Bucharest, Romania
3. Polymer Chemistry & Biomaterials Group, Krijgslaan 281 (S4-Bis), 9000 Ghent, Belgium
4. A. A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninsky Prospect 49, Moscow 119991, Russia