Gürsoy, M., Wilensky, A., Claffey, N., Herrera, D., Preshaw, P. M., Sanz, M., Schlagenhauf, U., Trombelli, L. and Demirel, K. (2018) Periodontal education and assessment in the undergraduate dental curriculum-A questionnaire-based survey in European countries. European Journal of Dental Education, 22 (3). e488-e499. ISSN 13965883