1. Department of Microbiology, DENTAID Research Center, Cerdanyola del Vallès, Spain
2. Department of Oral Health Sciences, KU Leuven, Belgium & Dentistry, University Hospitals Leuven, Leuven, Belgium
3. School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
4. Pharmacology and Toxicology Programme, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
5. Department of Periodontology, School of Dentistry, Universidad Científica del Sur, Lima, Peru
6. Department of Periodontics, University of Pennsylvania, School of dental Medicine, Philadelphia, Pennsylvania, USA
7. Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain