1. Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere, Rome, Italy.
2. AO Research Institute Davos, Davos, Switzerland.
3. Laboratory for Regenerative Orthopaedics, Department of Orthopaedic and Trauma Surgery, Campus Bio-Medico University of Rome, Via Alvaro del Portillo, Rome, Italy.
4. Department of Analytical, Physical and Colloid Chemistry, Institute of Pharmacy, I.M. Sechenov First Moscow State Medical University, Moscow, Russian Federation.