1. Section of Graduate Periodontology, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain.
2. Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea.
3. Etiology and Therapy of Periodontal Diseases (ETEP) Research Group, University Complutense of Madrid, Madrid, Spain.