1. Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of Health, Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Berlin, Germany Charité ‐ Universitätsmedizin Berlin Berlin Germany
2. Periodontology Unit, Centre for Host Microbiome Interactions Faculty of Dentistry, Oral and Craniofacial Sciences, King´s College London King´s College London London UK
3. Department of Oral and Maxillofacial Surgery, University Medical Center of the Johannes Gutenberg University, Mainz, Germany Johannes Gutenberg Universitat Mainz Mainz Germany