1. Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-900 Ribeirão Preto, Brazil
2. Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
3. Department of Chemical Science and Technology, University of Rome Tor Vergata, 00133 Rome, Italy
4. Bone Research Lab, School of Dentistry of Ribeirão Preto, University of São Paulo, 14040-904 Ribeirão Preto, Brazil
5. Sanford Burnham Prebys, La Jolla, California 92037, United States