1 Dental Research Division, Paulista University, Rua Doutor Bacelar, 1212, CEP: 04026-002 Sao Paulo, Brazil. Electronic address: lima.adf@gmail.com.
2 School of Medical Sciences and Photon Science Institute, University of Manchester, Coupland 3 Building, Oxford Road, Manchester M13 9PL, United Kingdom. Electronic address: david.watts@manchester.ac.uk.