1. Periodontology Unit UCL Eastman Dental Institute London UK
2. Periodontology Unit, Faculty of Odontology University of Santiago de Compostela and Medical‐Surgical Dentistry Research Group, Health Research Institute of Santiago de Compostela Santiago de Compostela Spain
3. Clinical Neurosciences Research Laboratory Health Research Institute of Santiago de Compostela Santiago de Compostela Spain
4. Periodontology Department, Clinical Research Unit (CRU) Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz (IUEM) Almada Portugal
5. Evidence‐Based Hub, Clinical Research Unit (CRU) Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz (IUEM) Almada Portugal
6. Library Services UCL Eastman Dental Institute London UK
7. Department of Statistical Science UCL Eastman Dental Institute London UK