1. Dental Hygiene Program, Faculty of Health and Social Studies, HAN University of Applied Sciences and Radboud university medical center, Radboud Institute for Health Sciences, Department of Dentistry Nijmegen The Netherlands
2. Department of Oral Function and Prosthetic Dentistry at College of Dental Science Radboud University Medical Center Nijmegen The Netherlands
3. Dental Hygiene Program Faculty of Health and Social Studies HAN University of Applied Sciences Nijmegen The Netherlands
4. Organization of Healthcare and Services at Faculty of Health and Social Studies HAN University of Applied Sciences Nijmegen The Netherlands