1. Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Oviedo, 33006 Oviedo, Spain, Department of Cell and Molecular Biology, Strangeways Research Laboratory, Cambridge CB1 4RN, United Kingdom, Department of Periodontology, Institute of Dentistry, University of Helsinki, 00014 Helsinki, Finland, Departments of Oral Surgery and Pathology, University of Oulu, 90220 Oulu, Finland, Unidad de Investigación, Hospital Universitario de Canarias, 38071 Tenerife, Spain, Department of...