1. Department of Dentistry‐Quality and Safety of Oral Healthcare, Radboud University Medical Center Radboud Institute for Health Sciences Nijmegen The Netherlands
2. Periodontal Research Group, School of Dentistry, Institute of Clinical Sciences, NIHR Birmingham Biomedical Research Centre, Birmingham Community Healthcare NHS Foundation Trust The University of Birmingham Birmingham UK
3. Heidelberg Institute of Global Health – Section for Oral Health, Heidelberg University Hospital Heidelberg University Heidelberg Germany