1. Department of Craniofacial Development and Stem Cell Biology; Dental Institute, Guy's Hospital, King's College London; London UK
2. Center for Craniofacial Molecular Biology, Ostrow School of Dentistry; University of Southern California; Los Angeles CA USA
3. Departamento de Patologia, Centro de Ciências da Saúde; Universidade Federal de Santa Catarina, Campus Universitário; Trindade Florianópolis Brasil
4. Materials Science and Engineering Department; State University of New York at Stony Brook; Stony Brook NY USA